: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.