I know this may seem like a weird question but what about the other two melee classes avaliable?

Scoundrel
Pros- Stealth, High burst, ability to heal
Cons- DPS hard to learn and doesn't get good until level 36, already seen the story [as you have a level 50 gunslinger]

Shadow
Pros- Ability to tank, stealth, high burst potential, can solo flashpoints
Cons- Um... i honestly can't think of a con for shadows personally, they have quite a bit going for them, im surprised there aren't more running around.