Actually, I hope any further game doesn't feature Mara Jade.
Don't get me wrong, she's my favourite character, bar none, but her life story is already so well mapped out (via various novels, comics, short stories, flashbacks, and MotS) that nothing can be done with her until the NJO-era.
I think any followup game should involve Kyle, Jan (I really miss her, we need a non-Jedi around to put everything in perspective), and Kyle's students (after JK, he would've been a Master).
I didn't like MotS all that much. There seemed to be almost no real link to the events of JK.
"The Beasts know much that we do not." -Ancient Jedi proverb