One, since Graatch hasn't posted, someone has to say "BUT WHAT ABOUT SCOUTS AND DEFENDERS...YOU KEEP SAYING RAGERS AND MENTIONING BERSERKER POWERS BUT NOT ALL RAGERS ARE BERSERKERS. PS SHIELD BASH SUCKA!".
(Sorry, I had to), but it's a valid point.
Second, there's a lot of shitty mechanic advantages that certain class/cabal/race have in CF. I think it's fucking retarded that bard fiend can kill multiple people at once even if the bard is a billion rooms away. So typing one command can kill multiple people with one swoop? That's more unfair than deathblow to me, but other than me no one complains about bards. I think despoil is fucking retarded 90% of the time (free 600+ hp just for having my item, woot!). I think Outlanders sitting chamo at the Tree ruins nearly everyone's funstick (but the Outlanders). Centurions when you play Battle and don't have the head fucking blow (which is why so many people are complaining about deathblow these days...what has happened to the Empire?!?!?!) and make the game 1,000,000 times less fun.
Third, you talk about bloodthirst being the absurdly awesome power, when actually, unless you only use it against Funnyone, it's not. It has terrible drawbacks that most players are just too lazy to exploit. It's a lot easier to say "Fucking bloodthirst is for faggots and lames, and I refuse to fight villagers" than it is to say "Man, I can't wait until this dumb-ass berserker bloodthirsts, I'm going to PRAWN his ass so bad". I love it when villagers thirst, it's like showing me your hole cards in Texas Hold-Em.
All in all, I kind of feel like it's just a hot button issue at the moment since Jerry loves playing berserkers and the flavor of the month is to hate on Jerry non-stop (even to the point where you're starting to sound just as delusional as Jerry...not you Rob, but some of the people like Tesline etc).