I'm not sure stuns from crippling add any aggro... bash stuns never increased aggro that i recall. I leveled a lot with a warrior friend with my SK back in original EQ and ya he could some pretty good damage we would let him sit in a berserk state while fear kiting. i think he would have been eating a lot of aggro if crippling blows added hate and recall it actually being quite safe.

The stuns from crippling are the same as ones from Bash. Its not a spell effect slot so the aggro is pretty insignificant.

There are bookoos of shamans... its harder than it looks lol.

My personal opinion is its really not worth having healer keep you in crippling blow range until much later in game (40+ at min)....before that you don't have the hps to withstand a bad pull or streak of max dmg be fore heals land in time....plus the fact that, although the eye candy big hits look cool, you really aren't adding much dps at lower levels with it.
As for dps, warriors do far better dps than most people realize or understand. They have some of the highest skill caps in all weapon types as well as dual wield and double (triple @60) attack. The reason I think most don't realize the dps wars can actually put out is because as tanks, warriors aren't gearing themselves for dps, they gear for hp / ac and aggro. I remember on live, mind you this was around omens era, my warrior was consistently in the top 10, and quite often top 5 dps on raids (man were rogues wizzys and rangers pissed!)....before guild would get upset and wonder why I was always bidding on dps weapons....once I was pulling ahead in dps the other wars started following suit.

Assuming the warrior isn't tanking, I don't think it's that bad? On my mid-30's ranger, the warrior is never ever getting aggro. A couple flame licks is enough to seal the deal versus other melees, excluding maybe the occasional streak from a rogue with dual Serrated Bone Dirks *sigh*