It's been a while since I've seen a build this different from the standard consensus build. That's a good thing - if you are enjoying playing your character, that is excellent.
No, I don't recommend WP/EM. But if I made one I'd be tempted to go a very similar route: ignore most of the low level attacks and concentrate on pure survivability and aggro management, and be a pure meatshield for a team in the early levels. Willpower is the way to go for survivability in the pre-SO levels. If you know that your aura is not as strong as others, and that stuns can cause problems for you --- "knowing is half the battle."
You certainly have top drawer enhancements in your build. I would have taken Air Superiority instead of Hover --- between mandatory Barrage, Boxing, and Air Sup you would have three attacks before level 20. And even without throwing slots at them, they will still help you hold aggro, and there will be times you may need them.
Since you don't have all that many fast recharging, low damage attacks, you can probably get by on Quick Recovery alone. If you are focussing on regen, I'd still try to find a way to work in Fitness at least to Health: it is better than Physical Perfection, which is essentially 1/2 of Stamina and 1/2 of Health. Three slotted Health and Stamina get you more than six slotted Physical Perfection.
<《 New Colchis / Guides / Mission Architect 》>
"At what point do we say, 'You're mucking with our myths'?" - Harlan Ellison
I'm sitting here eating my dinner, so I haven't really examined your build closely, but one thing jumps out at me right away: You have no heal enhancers in HPT.
Heal enhancers in HPT raise your maximum HP, which is effectively the same as damage resistance. Higher HP also translates to a higher regen rate. To clarify, let's say it takes 100 seconds to regen 100 hit points, or 1 HP/sec. If you raise your max HP by 50, it would now take 100 seconds to regen 150 HP, or 1.5 HP/sec. Since RttC's regen rate is based upon your total number of hit points, having more HP increases RttC's effectiveness as well. Heal IO's in HPT really increase the incoming DPS you can survive.
I'm definitely not a tank expert, although I do have a couple at 50, including a WP. I don't know the actual numbers but I suspect that slotting HPT solely for health would provide more benefit than an extra ~4% resists.
EDIT: After fiddling around in Mid's I figured out that HPT at ~100% heal enhancement would raise your HP by 30%. That's effectively the same as 30% damage resistance AND it raises you regen rate by 30%. I think it's a much better use of slots, unless the Impervium Armor bonuses are what you are after.
...in CoH racing to 50 is like trying to race to the end of your vacation. -Arcanaville
Debt barely slows down levelling these days. It's just a little bar that measures how much Awesome you've generated recently. (If you're not getting debt, you're just not trying to generate Awesome hard enough.) -Kelenar
Thanks!
Heraclea, while leveling I used a number of builds, but yeah, I have always focused on survival and aggro management and let my teammates do that whole beating-people-up thing. My teammates owe you a lot of saved debt and I owe a lot of saved embarrassment. 
That said, I'm glad I leveled smoothly. I don't think I want to exemplar down much any more, but thankfully with SSK I can protect a team of squishy lowbies at 50 without much problem so I don't have to.
About dropping Physical Perfection and taking Boxing and Health: Hm. That'd give me around 40% extra regen at the cost of about 25% recovery, which is a good trade considering I still have Conserve Power to fall back on. But about the only other power I could drop (without being crazy and dropping Energy Beam Eyes) is Strength of Will I think, which does come in pretty handy. I would have 3 extra slots to play with too, but, I think the only places they could go would give meh results for a non-PvPer; extra accuracy and status resistance.
Wow, Mr. Enigma, that's a really good point. 
Yes indeedy, I certainly don't need Impervium armour that much at all. A 3-set of Numi would max out the +HP to 30%, add in the set bonuses from that, and maybe add the +regen unique from Regenerative Tissue and that's looking really lovely (17.5% more hp/sec). Who needs inf anyway?
I've been lucky to have kind SGmates to help with crazy expensive salvage, and the recipes aren't so bad at the moment, fortunately, but yeah, I've been buying the Numis at the moment and it's not pretty. 
Cheers!
OMG! How like, totally kewl are these characters?!1
Yeah, Heraclea's guides were very helpful, but I was already set on making a WP/EM tanker for concept reasons. How badly did I do?
I seem to be doing alright as far as I can tell, but I figure you guys might have a better idea about how I stack up compared to an actual good tanker.
Some things that might be relevant:
This is my first tanker I've got to 50 after a couple of failures, and my fastest leveling character ever. I've found it very fun to play, mostly thanks to having no endurance or survival issues. Very refreshing after crazy Bruting with Shield Defence and Blasting with Archery and so on.
For me, the corpse bashing is compensated by the psychological boost of taking visible chunks of baddy health off all at once. Mostly I target bosses and only occasionally do I celebrate a scrapper's victory by punching the floor.
Taking heed of Heraclea's sage advice, I taunt and spam Whirling Hands fairly frequently when tanking for a big team to help maintain aggro. I haven't had any aggro problems yet, but neither have I been a main tank on an endgame TF yet, and I'm usually spoiled by good experienced teams.
Yes, Laser Beam Eyes is mostly there for concept reasons, but it comes in handy for catching runners. Oh, and debuffing and filling in against solo baddies because the DPA is marginally better than Whirling Hands, but, that's hardly a strong recommendation
I'm glad Physical Perfection allowed me to spec out Barrage and put in Energy Punch, which fills out my attack chain very nicely all on its own and is much less wimpy.
Soloing is silly and boring. But that's my opinion generally.
I don't have infinite inf.
The Build
Hero Plan by Mids' Hero Designer 1.601
http://www.cohplanner.com/
Click this DataLink to open the build!
Starjet: Level 50 Mutation Tanker
Primary Power Set: Willpower
Secondary Power Set: Energy Melee
Power Pool: Fighting
Power Pool: Flight
Ancillary Pool: Energy Mastery
Hero Profile:
Level 1: High Pain Tolerance -- ImpArm-ResDam/EndRdx(A), ImpArm-ResDam(3), ImpArm-ResDam/Rchg(3), ImpArm-ResPsi(5)
Level 1: Barrage -- Empty(A)
Level 2: Mind Over Body -- Aegis-ResDam/EndRdx(A), Aegis-ResDam/Rchg(5), Aegis-ResDam(7), Aegis-Psi/Status(7), Aegis-ResDam/EndRdx/Rchg(9), S'fstPrt-ResDam/Def+(9)
Level 4: Fast Healing -- Numna-Heal(A), Numna-Heal/EndRdx(11), Numna-Heal/Rchg(11), Numna-Regen/Rcvry+(25)
Level 6: Indomitable Will -- LkGmblr-Def(A), LkGmblr-Rchg+(43), LkGmblr-Def/EndRdx(46)
Level 8: Rise to the Challenge -- Numna-Heal/EndRdx(A), Numna-Heal(13), Numna-Heal/EndRdx/Rchg(13), Numna-Heal/Rchg(15), Taunt-I(15), Taunt-I(17)
Level 10: Bone Smasher -- Mako-Acc/Dmg(A), Mako-Dmg/EndRdx(17), Mako-Dmg/Rchg(19), Mako-Acc/EndRdx/Rchg(19), Mako-Acc/Dmg/EndRdx/Rchg(21), Mako-Dam%(21)
Level 12: Taunt -- Zinger-Taunt(A), Zinger-Taunt/Rchg(23), Zinger-Taunt/Rchg/Rng(23), Zinger-Dam%(25), Zinger-Taunt/Rng(27)
Level 14: Boxing -- Empty(A)
Level 16: Tough -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(27), Aegis-ResDam/EndRdx/Rchg(29)
Level 18: Hover -- Flight-I(A)
Level 20: Fly -- Flight-I(A)
Level 22: Quick Recovery -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(31), Efficacy-EndMod/EndRdx(31)
Level 24: Heightened Senses -- LkGmblr-Rchg+(A), LkGmblr-Def(31), LkGmblr-Def/EndRdx(33), LkGmblr-Def/EndRdx/Rchg(33)
Level 26: Whirling Hands -- Oblit-Dmg(A), Oblit-Acc/Rchg(33), Oblit-Dmg/Rchg(34), Oblit-Acc/Dmg/Rchg(34), Oblit-%Dam(34), Zinger-Dam%(36)
Level 28: Build Up -- AdjTgt-Rchg(A), AdjTgt-EndRdx/Rchg(29)
Level 30: Weave -- LkGmblr-Def(A), LkGmblr-Def/EndRdx(36), LkGmblr-Def/EndRdx/Rchg(36), LkGmblr-Rchg+(37)
Level 32: Energy Punch -- Mako-Acc/Dmg(A), Mako-Dmg/EndRdx(43), Mako-Dmg/Rchg(43), Mako-Acc/EndRdx/Rchg(46), Mako-Acc/Dmg/EndRdx/Rchg(46), Mako-Dam%(50)
Level 35: Energy Transfer -- Hectmb-Dmg(A), Hectmb-Dmg/Rchg(37), Hectmb-Dmg/EndRdx(37), Hectmb-Dam%(39), Hectmb-Acc/Rchg(39), Zinger-Dam%(39)
Level 38: Total Focus -- Mako-Acc/Dmg(A), Mako-Dmg/EndRdx(40), Mako-Dmg/Rchg(40), Mako-Acc/EndRdx/Rchg(40), Mako-Acc/Dmg/EndRdx/Rchg(42), Mako-Dam%(42)
Level 41: Conserve Power -- RechRdx-I(A), RechRdx-I(42)
Level 44: Laser Beam Eyes -- Achilles-ResDeb%(A), Thundr-Acc/Dmg(45), Thundr-Dmg/EndRdx(45), Thundr-Acc/Dmg/Rchg(45)
Level 47: Physical Perfection -- Numna-Heal(A), Numna-Heal/Rchg(48), Numna-Heal/EndRdx(48), Efficacy-EndMod(48), Efficacy-EndMod/Rchg(50), Efficacy-EndMod/Acc(50)
Level 49: Strength of Will -- ImpArm-ResPsi(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Gauntlet
OMG! How like, totally kewl are these characters?!1