Some interesting points there, especially like the picture with the 7 Inquisitor skills, looks like it will be a fun class to play

Though I am a bit concerned by the amount of stuns the class have:
Whirlwind 15 sec stun (breaks on damage)
Electrocute 6 sec stun
Lightning Drain 6 sec channelled stun (assume it breaks if the caster is hit)
Discharge 4 sec stun
And all of these spells are instant cast, and if the target breaks from your stun chain just pop the 50% damage resistance shield and wait for CDs^^
To me that looks very imbalanced and it would seem that the Inqusitor is a class you rather run away from than engage in PvP
Kinda reminds me of the old stun lock build on my rogue back in WoW, only there the target had no way of running before I engaged them

Oh and Dark Gift heal yourself or an ally, with a 1.5 cast and no CD it would look like a very viable healing spell. Assuming it does heal for a decent amount of HP.