This issue has been acknowledged by a Dev, though I forget which one, and I hope that means they are looking into a change soon... at the very least, I want to be able to move all of these things that I will never use (when I get them) to the same character.
I'm sitting on 9 useless Enhancement Catalysts on my blueside Stalker, and this is after using 6 to upgrade my Stalker's Guile set to Superior.
Why aren't these transferable?
Once you catalyze a whole set, what good are they? None.
My guides:Dark Melee/Dark Armor/Soul Mastery, Illusion Control/Kinetics/Primal Forces Mastery, Electric Armor
"Dark Armor is a complete waste as a tanking set."