Forgot to mention for character types I would recreate quickly if/when CoH returns....
I had been in a couple of random groups with people who had annoying powers who did nothing to keep the powers from being annoying (say knocking back enemies from melee). Having had enough of that and wanting the ability to be annoying in return I made a Gravity Control/Energy Assault Dominator, figuring between the knockback in both sets, Wormhole, and Dimension Shift that nobody could top me for annoyance.
As it turned out, it was a really useful character. On top of being able to knock enemies away from friendlies, I could use Gravity Control to root foes and freely blast away without knocking them around. What started as a joke/revenge character turned out to be a lot of fun to play.