Im trying to stay away from Rage i've always been an advocate of "a good marauder doesn't need to spec Rage!" but im finding it more and more difficult to resist :-P everytime i log in i think about respccing :-\
You should at the very least try Rage.
As far as Annihilation... oh well... adapt!
Eh, not the first nerf in the game, most certainly not the last. We'll live.