If you want a Tank with damage and insane utility with survivability, may I suggest a Bio/Dark Tank. I have one and he is absurdly ridiculous, add in the proc'd attacks with offensive adaptation and soul drain. Siphon life every 5.3 seconds heal at 364, is insane. Not much else to say except, kill and have fun.
You are going to get hit with DR, meaning diminished returns. Sentnels along with all other ranged toons, other then Widows or Banes, are going to get hit hard as well. Defense in PVP being ranged or melee is not going to be a game changer.
Umm small heal and damage midling of the pack, that is let's see a 389 hp heal every 5 seconds and a proc monster equals your well below pissing on any grave
Scrapper ATO' can be slitted like another Arche Type at level 10, including the critical strikes. You will have all the benefits of those nasty crits at level 10. In my opinion fury will not surpass that damage.
So your taunt aura is not going to be as strong as a brute or tank, second your fire resistance will not cap to 90 like a brute or tank, fire defense you get from sets mostly and you want to aim for 45 minimum. I could see the offensive potential, but go with a brute.
I took Mezmerize and Harmonic mind and they are absolutley beautiful. Mesmerize hit pretty hard and Harmonic mind takes all your end issues away. Mental Blast and Dominate hit like wet noodles, alond with psionic tornado.