I think she used to be pretty important for certain Heroic Sith Raid teams, back when doing a million damage with one team was considered a great run. I think she was also introduced around the time the raid came out for basically that reason - I could be wrong on that so don't quote me. So she'd probably perform decently there if nothing else, otherwise a good counterpoint to Sith teams in TW/GA.
Curious to see if she'll make a bit of a resurgence what with being an anti-Sith character and Darth Revan being part of the arena scene now.