It's a pretty good build - you have good survivability since you're soft-capped and have Aid Self. The only issue I see is that you dont have enough recharge to run Katana's best ST DPS attack chain, GD>GC>SD>GC. It requires 250% recharge in GD, 90% in GC, and 136% in SD.
To get the recharge, I'd drop Combat Jumping to pick up Hasten, if you want to keep Aid Self. Also, Tough being relegated to a mule for the steadfast IO is not unheard of, but a fully slotted Tough helps survivability quite a bit. I would also remove Swift and take Conserve Power so that you'll be at least approaching endurance sustainability.
Here's a No Purples/No PVP IOs Kat/SR I put together than doesn't have Aid Self, but has excellent regen, runs the GD>GC>SD>GC chain, is endurance sustainable, 95%+ Acc vs. +4 mobs in all attacks, and has 1802 HP with the +HP Accolades.
If desired, you could replace the Oblits in GD and the Crushing Impacts in GC with their respective Purple sets for increased damage and global recharge. If nothing else, it'll give you something to compare to. 
Code:
| Copy & Paste this data into Mids' Hero Designer to view the build | |-------------------------------------------------------------------| |MxDz;1405;705;1410;HEX;| |78DA9D935B6F124114C767B99402CBAD14E80D28686D69CBB6441FBC249A686B522| |D9542ED938A2B9D1694006169D2BEF901BC246DD527DFB4EA47303EF9E09750BF88| |D18AE7329018DFDCB4FFDFCE99FF39337386CDEF2DE9423CBE2234FFB5BA6959E55| |2A56DB65AB2ED5A333BBB6DB33E70D3EC944B45971022D29B2BE7655D4A0366CC86| |99EC4797E4B66C58D228EDE2A828B7EB724F5AA1954655B665A363F45EF442B3593| |7AED73A0D69593C589566ABD6D8F1A9999D6A07461E1A955A526E85965BB58A71B5| |B9B55FCE9B5647B6F747604319F87F8A3BA3A7EB14F70139913009A90AE1F416433| |23EDB84088B3C6669946517410D67FC61C63061244258039FA67C1AFB6CECB3B16F| |9A7DCFC06757BBB0FFB461C8F18B7142F0FC26E85D069A73E23964395596F30DCD0| |CBC651C1306DF31DE738D0F3C07592EDE9370CDD0A90A10727321E14E51280A212F| |BB6CDE13405C647F10720932C4C0E0E31C9BEF2B559EFD4698FF4E708121C0159C8| |1753A66B0C82811129B84D90DC66DC2016485D49942DC8921EEC4107722CA9D8872| |2746B813839015566B850F6866F890714438F382F192F18AB00E591175C6085F442| |2C4D7C2B7730B0C31D5AA181B0E2134AAF637BA4D9D18DB6154091335C64342E611| |017FFFE3AAD07896422508C5D5E271AE9DE1C533BCF81118926AA5247762923B31C| |99D98E44EA4B813A92F840DC84A735947DA43854E79193AC3C727F41334B04FA99B| |9F1AE38D4147675468668E42C770D173AAE81CF62E2EE62F6B841B8069915D612C1| |3EC50D450BF7A2346BE85455A6EE12CE31C210DBE45D582455E29F717261CFD8F13| |FEE011ABFF440A0EF5254244A348D2D1FF38BBEE60FF13F9DFE7A3DE2BE72E7A403| |7500A20DA26BEDD41B98BC37BF866E2DB03940A0EBB9FF4DE8603E7715F17502EA2| |5C4289C0FEC41374BABC205E141DC587E24709A00451C2286328AF51BA7F00B2BDF| |AB9| |-------------------------------------------------------------------|
Depends on what you are shooting for. It is a very solid build as is for general PvE play.
1) Soft capped? yes
2) DDR capped? yes
3) Attacks have the ability to land blows vs +4's? yes
What could be improved (or rather what I'd be looking to improve)?
1) Overall Max Health, overall passive regen.
2) Net Endurance Recovery. With Tough toggled off I'm guessing you could go a long long time without needing a blue or running out of end in normal PvE. Toggle Tough on and this gets iffy. I suspect you'll slowly but noticeably run down and will need to use blues and/or have outside buffs. Then again Tough is essentially a mule in the build >>> I'd be looking to add 3 slots and have the option to run it 24-7 without draining the end bar.
3) Add a Kismet +6% somewhere. Particularly given the amount of global accuracy you have in the build any to hit bonus will have that much more effect on your ability to smack hard to hit stuff like a +4 Rikti Drone.
4) An Achilles -resistance proc somewhere.
5) Wee bit more recharge to run Katana's GD>GC>SD>GC
Seeing Gaidin's post while typing ... seems as if, overall, we're saying pretty much the same thing ...
Making a couple changes to grab Hasten (for the recharge) and slot up Tough for more ongoing usage and improved +recovery another angle on the build.
Hero Plan by Mids' Hero Designer 1.704
http://www.cohplanner.com/
Click this DataLink to open the build!
Sentinel of the Row_Waffle Slayer alternate (v1.00.i17 purpled): Level 50 Natural Scrapper
Primary Power Set: Katana
Secondary Power Set: Super Reflexes
Power Pool: Fitness
Power Pool: Fighting
Power Pool: Medicine
Power Pool: Speed
Hero Profile:
Level 1: Gambler's Cut -- C'ngImp-Acc/Dmg/Rchg(A), C'ngImp-Acc/Dmg/EndRdx(3), C'ngImp-Dmg/EndRdx/Rchg(3), C'ngImp-Dmg/Rchg(5), C'ngImp-Acc/Dmg(5), Achilles-ResDeb%(46)
Level 1: Focused Fighting -- LkGmblr-Def(A), LkGmblr-Def/EndRdx(17), LkGmblr-Def/EndRdx/Rchg(19), LkGmblr-Rchg+(23), Ksmt-ToHit+(25)
Level 2: Flashing Steel -- Erad-Dmg(A), Erad-Dmg/Rchg(7), Erad-Acc/Dmg/Rchg(7), Erad-Acc/Dmg/EndRdx/Rchg(9), Erad-%Dam(9), Erad-Acc/Rchg(31)
Level 4: Focused Senses -- RedFtn-Def/EndRdx(A), RedFtn-Def/Rchg(19), RedFtn-EndRdx/Rchg(21), RedFtn-Def/EndRdx/Rchg(25), RedFtn-Def(27), RedFtn-EndRdx(29)
Level 6: Agile -- GftotA-Def(A), GftotA-Run+(11), LkGmblr-Rchg+(11)
Level 8: Build Up -- GSFC-ToHit(A), GSFC-ToHit/Rchg(13), GSFC-ToHit/Rchg/EndRdx(13), GSFC-Rchg/EndRdx(15), GSFC-ToHit/EndRdx(15), GSFC-Build%(17)
Level 10: Practiced Brawler -- RechRdx-I(A)
Level 12: Swift -- Run-I(A)
Level 14: Health -- Numna-Regen/Rcvry+(A), RgnTis-Regen+(50), Mrcl-Rcvry+(50)
Level 16: Dodge -- GftotA-Def(A), GftotA-Run+(21), LkGmblr-Rchg+(23)
Level 18: The Lotus Drops -- Oblit-Dmg(A), Oblit-%Dam(31), Oblit-Acc/Rchg(33), Oblit-Dmg/Rchg(33), Oblit-Acc/Dmg/Rchg(34), Oblit-Acc/Dmg/EndRdx/Rchg(34)
Level 20: Stamina -- P'Shift-EndMod/Rchg(A), P'Shift-EndMod/Acc(27), P'Shift-EndMod(31), P'Shift-End%(33)
Level 22: Quickness -- Run-I(A)
Level 24: Boxing -- Amaze-Stun(A), Amaze-Stun/Rchg(42), Amaze-Acc/Stun/Rchg(43), Amaze-Acc/Rchg(43), Amaze-EndRdx/Stun(43)
Level 26: Soaring Dragon -- Hectmb-Dmg/Rchg(A), Hectmb-Acc/Dmg/Rchg(40), Hectmb-Acc/Rchg(40), Hectmb-Dmg/EndRdx(42), Hectmb-Dam%(42)
Level 28: Lucky -- GftotA-Def(A), GftotA-Run+(29), LkGmblr-Rchg+(46)
Level 30: Tough -- S'fstPrt-ResDam/Def+(A), Aegis-ResDam(37), Aegis-ResDam/EndRdx(48), Aegis-ResDam/EndRdx/Rchg(50)
Level 32: Golden Dragonfly -- Armgdn-Dmg/Rchg(A), Armgdn-Acc/Dmg/Rchg(34), Armgdn-Acc/Rchg(37), Armgdn-Dmg/EndRdx(37), Armgdn-Dam%(40)
Level 35: Evasion -- LkGmblr-Def(A), LkGmblr-Def/EndRdx(36), LkGmblr-Def/EndRdx/Rchg(36), LkGmblr-Rchg+(36)
Level 38: Weave -- LkGmblr-Def/EndRdx(A), LkGmblr-Def/EndRdx/Rchg(39), GftotA-Def/EndRdx(39), GftotA-Run+(39)
Level 41: Aid Other -- Empty(A)
Level 44: Aid Self -- Dct'dW-Heal/EndRdx(A), Dct'dW-Heal/Rchg(45), Dct'dW-Heal/EndRdx/Rchg(45), Dct'dW-Heal(45), Dct'dW-Rchg(46)
Level 47: Hasten -- RechRdx-I(A), RechRdx-I(48), RechRdx-I(48)
Level 49: Hurdle -- Jump-I(A)
------------
Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
Level 6: Ninja Run
Code:
| Copy & Paste this data into Mids' Hero Designer to view the build | |-------------------------------------------------------------------| |MxDz;1464;757;1514;HEX;| |78DA9D935B6F124114C7676129E54EA5D82B65ED0D28B28568A26DD53ED89AD8168| |AD0B42F2A6E616849360B01AAED9B1FC04BD21A7DF2CDEB47303EF971BC7E01AD78| |E69C81C4F8E606CE6FE6ECFFCCF9CFEC6EF670C5CBD8C365A6F8AF9B46AB552A969| |B46A3C19BCE9CD13E681AE672915BED9AC54DAD5ED5DAFB5C2BD41F94768C6AD5E4| |5AD1348E785333CC366F5A469B6BF1FB193D9DD66B994B5AE3A0D9307925E1648C8| |5BB8B96B2DCE45C5F37DA8665447BD9155EE5568BEBC503312B7058FB90B7066E5A| |FBBC09DDF5EEC09BAFD74DFD46AD6DF156CB27277BFB606F8F66595EA995C1AC1B6| |7C506E795D06AA356D677B8D1A85BA5ACD102AB47C3E02901FFC7C21C5E1D072B03| |32CC56217084BA4BB887487DB23116625951A56095CA0615712718449C0921CE861| |1C3A72089B0274EA98626CA679B48F57D257C43F47F27FC404C7C41E4A0CA4E4D1C| |7637ADEE410C7A69751F62D48F180F2036A1CA415536473F0C62CCED2290A7A7207| |04A33CE573691F2BE26BC41F8DF12DE2182EF11792871D1B2CC95C4B37040CA2353| |9E14A69C90F2C9E6BE6D6C97B9A688CD64D6D0C32D1004A42040EE06C91D9E588C1| |D836040BA1BF889AD27985D40FB8533ED1471EE37A183E887AA102D6B0F9D606AF4| |39151F53D50B4401746169394C9615480D514375680D558975C4DC06214BC8214E4| |03E22E523314CC5E2840415CF11928822C8C7E47EC768BFE3B4DF143D0D3B0822D2| |7964088F6AFA22DE994FD3F95D403C035D54F68D2ED0DE1711D34B842BE4E22A620| |BE49372D9497A41A7E8059DA217748ADAABA09B91BA1912CC926056459BB3E43602| |BA38B567F10E5C2C0A99A434945CC792F359428EB08948E5119320D7E541E8F4FEC| |CFF853E10A4E5A349C73135AEF6BE4DF889A61BFF64F26AEFD3620A19537BDF66C7| |15848F81EEFEEFF5C1DB5DCE557043DC12210F41D916A3DB22DC11D3BB626488D1A| |E086531ED7CF4760D072E0B5F0B222C8AB0244218FCB14742E9F440F088E015C127| |825F848008411142228C8AF05284CE1FCB910832| |-------------------------------------------------------------------|
Hey, folks. I'm not really all that great with mids and making solid builds. I always tend to overlook simple things that others see easily. I was hoping some of the more experienced build makers and players could take a look at my build and tweak or point out anything that could improve it. Thanks in advance.
Thoughts on the ITF: "What? 600+ men in loincloths running around and you're going to tell me not one of them has had something slip out?"