:BD: doesn't have broken skills that I can tell... but it has a lot of garbage ones.  The mana cost on spells is ludicrous for its effect; a spell used to cost like 8 in DD and do incredible damage.  And if you're not a mage, you have no fun combat skills whatsoever, making you a passive tank.  Not my idea of fun play.    
Lockpick is broken, literally.  Pickpocket is broken, but the other way: it's laughable how much you get from every merchant with a mere investment of a skill point or two.  Embellish?  Wisdom?  Not literally broken, no, but worthless.