Lol... I don't care whether it's in, actually. From a CTF perspective, here are the ups and downs:
Pro: Adren can break a deadlock if used well against a well- matched team. Plus it's kind of fun and you know the match is halfway over when you start hearing the "whoosh."
Con: Adren can ruin a map if it's not well- distributed and yes, if there's a butt- kicking in progress then adren turns a sandwich into a banquet.
So yeah, in the end the good and the bad kind of cancel out for me... I wouldn't scream if they left it in, and neither would I be upset if they took it out. Another thing to consider is what the weapon/ health/ movement mix is going to be in UT2k7; it may not need adren at all, who knows?
All of the above refences 2k4 adren, BTW. 2k3 adren was a little annoying because there was too much of it... with players constantly popping in and out of a souped- up state it made the overall flow of the game seem kind of jerky, if that makes any sense. At any rate, it was too much IMO.