Having gone through all of my characters and organised their spells, I once again find my hunter short on action bar space.
I don't know whether there are any other classes that suffer the same problem, but I have a druid, warlock and priest all at 85 with spare spell slots and I've never had this problem on any other class (or at least, the hunter has always been the worst).
Survival (I've switched from MM, since I like Entrapment better than Chimera Shot) seems to not be as bad - there are 3 fewer abilities than for my BM setup.
I am, however, definitely liking my self-heal and survival options, of which there are plenty - Readiness is going to be epic with double Exhilaration, Intimidation, Silencing Shot, Deterrence spell reflect, Bestial Wrath, Scatter Shot.... can't wait to get into the MoP Arena - PvP has never looked so good! :)