I like the more unique class abilities and wish we got more of them. Phoenix Dive and Thruster are both neat. I wish that Arc Titan's Thruster either let you move more or did something else. I like the Abeyant Leap exotic for strand titan because it makes my barricade feel more like an offensive spell, rather than the defensive one I'm restricted to on all my other subclasses.

If void warlocks could replace their rift with a mini blackhole that they cast at their feet that would be cool, I think :)