I'll be rolling a Sith Marauder using the Carnage skill tree for IMB. Which means melee DPS for me.
I'm also willing to roll an Agent Operative alt character specced under the Medic tree if you guys really need a healer... but to be honest, I'd rather roll full DPS on this side of the fence considering I'm going full tank on the other side.
My full list on the Empire side...
Sith Warrior - Marauder - Carnage - Melee DPS
Sith Inquisitor - Assassin - Darkness - Tank
Bounty Hunter - Mecernary - Arsenal - Ranged DPS
Imperial Agent - Operative - Medic - Healer
...sp really, I'm able to function in any role, but I'd prefer overall to stick with the Marauder if possible.