Yeah, its pretty damn sweet.
Though it can be annoying to miss your ulti that you powered up all game for :S
or the spell lock mechanic Annoys the hell out of me
Basically certain spells when they hit you, trigger a "Spell lock" affect on you, and the next spell you cast, goes on a 5 or 6 second cooldown without being used.
Which is sadly Huuuuuge in this game