Hey, I don't usually chime in on things like this, or the forums at all, but I'm kinda on the fence.
On one hand, I did get Jaesa at 28 like someone else here mentioned, but I have a far easier time 1v1 against elite mobs than I do against groups of little mobs for some reason. A boss I can pop all my cooldowns slowly to mitigate the incoming damage while using annihilation heals, but groups of mobs tend to tear me a new one. Boss mobs are supposed to be epicly hard, in our marauder story they're the life or death duels. The pivotal points, but I have died way more to random mobs.
So yes, marauders are playable, but no, having to stop and constantly heal in between every single group of no name mobs does not make me feel like I am the powerful sith lord our story portrays us as. I don't know how to balance out the two, I leave that one to wiser heads, but many times I have wished I woulda just gone juggernaught so I could use the rage tree with heavy armor.