i think instant healing could do with reduce recharge instead of the endurance reductions, maybe 2, because you have hasten.
no fast healing in this build?
i respecced out of MoG, i didnt find it all that great in PvP
Ok so you'd suggest dropping MoG for Fast Healing?
If I changed the End Red SO's in Instant Healing for Recharge Red's it wouldnt make it to end heavy would it? I mean i don't really know what im doing with stalkers but she's been moaning about her build for ages so im trying to get something she'll be happy with long term. So it would help if i could explain the benefits/downfalls of the changes.
MoG is the only regen power that increases your defence, which among other things can prevent aoes de-hiding you.
I really should do something about this signature.
Ok... She doesnt like MoG anyway, so lets avoid a debate about how effective it is :P
what about the other powers ive chosen?
Leadership - Good for a stalker or not?
You might want to reconside fly as a travel power, its a pretty crappy escape power as its slow, low maneveurabilty and can be countered esaily by things like snow storm impale web grenade (which is a temporary power) also air supperiority isn't a good attack on stalkers.
I'd advise SJ or teleport as escape powers on a stalker.
Hasten could use 3 slots, it ensures that placate and AS are as often as possible.
For placate i'd put in 3 recharges and any spares should be range. The extra range in placate will be great if you focus and placate from a far, then sneak up and AS.
integration should be 3 heals 1 endurance redux
dull pain 3 heal 3 recharge
instant healing 3 heal 3 recharge
I'd get rid of leadership if i were you. consider grant invis for team mates? or invisi for you and maybe phase shift for those times where things don't go well in battle.
Also slot hide with 3 defence buffs its the most defence your going to get out of being a regenner.
Oh yeah definately get MoG the only other defencce power in regen next to hide, slot it 1 res damage 3 defence buff 2 recharge.
yea i hate fly but the thing to remember is it's for my GF and she's not the best at PvP as it is. SJ she hates and won't use because of rubberbanding. Teleport i could try to get her to test on a low level alt first i guess. might give that a shot.
I used Leadership in the build because of the extra dmg/acc which i thought might be useful when it comes to AS and using attacks like shockwave etc
I'll try rebuilding the character in builder when i get back home and i'll post the new build in this same thread if u dont mind checking back on it and giving more opinions/advice incase i gimp it up slightly?
here is how I would build a claws/regen stalker for PvP kept in mind fly 
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Exported from Ver: 1.7.5.0 of the CoH_CoV Character Builder
---------------------------------------------
Name:
Level: 41
Archetype: Stalker
Primary: Claws
Secondary: Regeneration
---------------------------------------------
01) --> Strike==> Dmg(1)Dmg(3)Dmg(5)Acc(23)
01) --> Hide==> DefBuf(1)DefBuf(11)DefBuf(13)
02) --> Slash==> Dmg(2)Dmg(3)Dmg(5)Acc(25)Acc(40)
04) --> Fast Healing==> Heal(4)Heal(13)Heal(15)
06) --> Assassin's Claw==> Dmg(6)Dmg(7)Dmg(7)Acc(11)Acc(40)
08) --> Build Up==> Rechg(8)Rechg(9)Rechg(9)
10) --> Air Superiority==> Acc(10)
12) --> Swift==> Run(12)
14) --> Fly==> Fly(14)Fly(15)
16) --> Integration==> Heal(16)Heal(17)Heal(17)EndRdx(25)
18) --> Health==> Heal(18)Heal(19)Heal(19)
20) --> Stamina==> EndMod(20)EndMod(21)EndMod(21)
22) --> Placate==> Rechg(22)Rechg(23)
24) --> Dull Pain==> Rechg(24)Rechg(27)Rechg(27)Heal(31)Heal(31)Heal(31)
26) --> Eviscerate==> Dmg(26)Dmg(34)Dmg(36)Acc(36)Acc(40)
28) --> Instant Healing==> Rechg(28)Rechg(29)Rechg(29)Heal(34)Heal(34)Heal(36)
30) --> Stealth==> DefBuf(30)
32) --> Shockwave==> Dmg(32)Dmg(33)Dmg(33)Acc(33)
35) --> Reconstruction==> Rechg(35)Rechg(37)Rechg(37)Heal(37)Heal(39)
38) --> Hasten==> Rechg(38)Rechg(39)Rechg(39)
---------------------------------------------
01) --> Sprint==> Run(1)
01) --> Brawl==> Dmg(1)
01) --> Assassination==> Empty(1)
02) --> Rest==> Rechg(2)
---------------------------------------------
There's some great suggestions on here, keep them coming.
It's the GF btw, and ouch to the comment on PVP Xylax lol.
I'll try out TP on a lower level toon if i get chance.
Thanks again
Gah how could i miss this out, your missing one serious thing from your build- focus
Its the hardest hitting attack in the claws set, its super fast animation time, ranged attack and also knocks down (not back) foes. I was in sirens today and fought a claws/ea stalker. With build up and focus he took over half my health off. Its a seriously good attack and you get it at 18, so get that if you want to PvP.
And in that build above, hasten is taken way to late. take MoG. get rid of air superiorty and take hasten instead hasten and ss is probably your cheaper choice.
Evis hits harder than focus, but of course it isnt ranged.
Evis doesn't always get a critcal when you come out of hide, Evis crits are random whereas focus always crits when coming out of hide 
Iv got my regen/claws stalker at lvl 26, and power choices are getting pretty limited. Is the fitness pool really required? as theres only 1 toggle and the attacks are pretty easy on the end, would a few end reducers do? Again, is hasten really required? as powers are quick recharge, and only benefit i can see would be for dull pain, as recon is pretty quick with 3 recharge, and with the knockbacks and attacks, assasin is recharged by the time u have used alternative attacks. Just lookin for some guidanace as this little stalker dude seems to have to many choices from past builds iv made.
Nice build, although some of the powers like dull pain, placate etc I would take earlier, and reconstruction is really worth having for pvp which means taking before lvl 30. Id maybe think of taking out stamina if its only for pvp, iv been pvping a fair bit, and although stamina is planned for lvl 35 for pve, iv never really suffered from not having it in pvp, as stalkers usually play the 1 - 2 hit kills.
Ok, so my GF dislikes her stalker in its current state. She's decided to use it soley for PvP now and focus on taking her brute to level 50 when I7 hits.
I've been playing with Hero Builder and came up with this for a build. Comments/suggestions/observations welcome
---------------------------------------------
Exported from Ver: 1.7.5.0 of the CoH_CoV Character Builder
---------------------------------------------
Name:
Level: 41
Archetype: Stalker
Primary: Claws
Secondary: Regeneration
---------------------------------------------
01) --> Strike==> Acc(1)Dmg(3)Dmg(3)Dmg(5)Acc(5)EndRdx(7)
01) --> Hide==> Empty(1)
02) --> Slash==> Acc(2)Dmg(13)Dmg(13)Acc(15)Dmg(15)EndRdx(17)
04) --> Reconstruction==> Heal(4)Heal(17)Heal(19)EndRdx(19)EndRdx(21)
06) --> Assassin's Claw==> Acc(6)Dmg(7)Acc(9)Dmg(9)Dmg(11)Acc(11)
08) --> Stealth==> EndRdx(8)EndRdx(31)EndRdx(36)
10) --> Build Up==> TH_Buf(10)TH_Buf(25)EndRdx(25)
12) --> Placate==>
14) --> Dull Pain==> EndRdx(14)EndRdx(23)EndRdx(36)
16) --> Air Superiority==> Acc(16)Acc(40)EndRdx(40)
18) --> Integration==> EndRdx(18)EndRdx(31)EndRdx(34)
20) --> Resilience==> DmgRes(20)DmgRes(21)DmgRes(23)
22) --> Fly==>
24) --> Hasten==> Empty(24)
26) --> Eviscerate==> Dmg(26)Dmg(27)Dmg(27)Acc(29)Acc(29)EndRdx(31)
28) --> Instant Healing==> EndRdx(28)EndRdx(39)Heal(39)Heal(39)Heal(40)
30) --> Assault==> EndRdx(30)EndRdx(36)EndRdx(37)
32) --> Shockwave==> Dmg(32)Dmg(33)Dmg(33)Acc(33)Acc(34)EndRdx(34)
35) --> Tactics==> EndRdx(35)EndRdx(37)EndRdx(37)
38) --> Moment Of Glory==>
---------------------------------------------
01) --> Sprint==> Empty(1)
01) --> Brawl==> Empty(1)
01) --> Assassination==> Empty(1)
02) --> Rest==> Empty(2)
---------------------------------------------
BTW - i didn't realise until i was just about to post that i'd left FLY unslotted, so i'm thinking of suggesting that she drops one of the healing SO's out of reconstruction and has 2 flight SO's slotted to make traveling quicker.