When I was talking about backstabbing I meant fighter/thieves.
As for the rest: I can see we're only going to agree about not agreeing with each other
. But still...
I never warmed up to Werewolves, Greater or not. They can buff, but can't wear armor and they certainly can't wield weapons. IIRC the Shapeshifter Werewolf's claws count as +1 weapons and the Greater Werewolf's as +3. I do like the Shapeshifter from a roleplaying perspective, though.
The c/r does have access to insect summoning spells, c/r does have access to druid spells to some extent.
Also, c/r can cast Silence 15' radius, Miscast Magic, Zone of Sweet Air, Rigid Thinking, Magic Resistance, True Seeing, Chaotic Commands, Shield of the Archons and maybe some others I forgot. All useful against magic attacks - although one more than the other.
I wouldn't say c/r suffers from a lack of hp. It just that a barb has more. But then again, he really needs them because a) a barb can't cast Armor of Faith, Protection from Fire/Ice/Acid/Electricity/Fear/etc. and a lot more and b) in addition, c/r can wear far better armor than the Barb - almost all armor, in fact.
Barbarian Rage has a lot of advantages, including protection against some serious stuff. But it doesn't last that long. The c/r can make variations in his spellbook as much as the situation warrants. All in all, the c/r can protect himself much better.
All of that notwithstanding, my first pc was a Barbarian. He's still one of my favorite classes
. I like that 'Get out of my way here comes the lawnmover' attitude. I wish I could solve things that way in RL.