I have a low tolerance for keyboards, unless they are done exactly the way I like them. My problem with Pinnella is not his playing, but how he has his keyboard sound (I think this sis what some of you more knowledgeable types refer to as "sound patch"). If his usual style was more in the vein of his Awakenings solo, or the stuff towards the end of DWoT, I'd like him a lot more.
I have the same problem with Jordan Rudess, incidentally.