Just to feed back to OP: I don't post much but I do have an AR/Nrg/Soul.
It's a fun build, I alternate between using build up + full auto and tentacles/nightfall/flamethrower/buckshot to tear up spawns at a reasonable pace, although I built the character purely for recharge because I love spamming full auto
With that comes the caveat: all your aoe dmg is dot and your single target ranged burst is poor due to no third ranged single target attack. Makes teaming with a couple of shield scrappers an excercise in corpse blasting which is not super fun.
The other issue is lack of control and armours making you super squishy - its hard to build enough recharge to capitalise on full auto while building ranged def, and building s/l def without an epic def shield is somewhat 'meh'. I use oppressive gloom and the stuns in the melee attacks to mitigate incoming damage, but it is very easy to go from healthy to dead in a blink if you misjudge a situation. An archetypal squishy vengbait blaster :P
I have the most fun on this character in slow shardy TFs where you can hang behind a tanker and unload nonstop.
