Derek is already going to be on tour this fall:
www.pollstar.com/tour/sea...t=planet+x
www.xplanetx.com/tourdates.html
I am not sure he would have time or fit well with Enchant.
Kevin Moore is not much for touring..has Chroma Key ever played 1 live show?..he did play with ON I believe..but was not a member, and declined to tour with Fates Warning on the past 2 tours (granted, doing that might make him feel/ or give the impression he was IN the band, and yet he wrote none of that material, Jim did.). I just can't see him joining, it would be a treat, but Kevin i get the sense leads a very secluded private life overall, and touring was 1 reason he left Dream Theater in the 1st place. I think he does, or at 1 time did live on an Island...or somewhere isolated, maybe Tahiti..forget.
The names that come to my mind are:
The Yes list:
Tom Brislin- from YOU WERE SPRIRALING who played last year on Yes's Symphonic tour.
Igor Khoroshev- former Yes keyboard player
Patrick Moraaz- best known for the work he did on Yes's Relayer album.
Vinnie Fontanetta- of the recently broken up band Without Warning.
Shaun Michaud- from Event (whose also on I/O records btw). He played keys/guitar with Fates Warning on their last tour.
Jens Johansson- solo keyboardist who auditioned for Dream Theater when Kevin Moore left, and plays for Stratovarious.