Stradus

For single target i find it better to just cycle lift/crush/GD instead of casting 1 propel. The Inherent movement slows will stack and keep you out of melee. My dom is grav/nrg and with all the range attacks there is really no need for propel(despite it being the 2nd most fun power in the game. 1st being wormhole )

I would never drop crush. For pvp and for AV's crush is great for slowing movement. Most of your grav moves have inherent movement slows which is invaluable in pvp and against big strong guys.

I have a grav/energy dom currently at lvl 48. I love grav period. My 1st 50 was grav/kin troller and i loved every second of it. The added dmg as a dominator and the style of grav is alot of fun. Only moves i skipped were propel(i know its fun but not very useful with all the energy blasts.) Dimension shift. and the snipe. If you want more AOE go force or fire EPP.