Prior to the Sons, I would have said that DT's approach to keyboards under Derek was one of my favorite eras of the band. I liked his songwriting, as well his more modern approach, and thought he had an edge and rockstar flamboyance that Rudess replaces with a less desirable (to me) mad scientist schtick.
After the Sons, I'm no longer yearning for Derek's return to DT. His ideas, the sounds he uses, the way he plays, hasn't evolved a lick since Falling into Infinity. His aversion to technology is misguided and backwards looking, and underscores just how far he is from the state of the art. His personality, frankly, sucks. The fun and flamboyant player is now a crotchety old man on a high horse.
Enough. If I am to be sold on the idea of a "super group" part of the deal is the personalities involved need be one of the attractions. The band are talented but what they have in chops they lack in personality, and it doesn't help to have MP and DS act like old men yelling at clouds. Make me excited about your music based on what you do well, not by encouraging negativity over what you think the other guys do poorly. Meanwhile Rudess delivered one of his best DT performances yet on D/T.