I find it amusing that so many Sith players go Light side just to be "different" and so they can "change the Empire from within", yet refuse to have anything romantic to do with Vette. I mean, wouldn't romancing an alien in the Empire (especially as a human or Sith Pureblood) be the ultimate in deviant behavior in a society that prides itself on xenophobia? It just has so many fun possibilities roleplay wise.
On the subject of Jaesa, a Light sided romance with her would be nice, but not an absolute necessity for my enjoyment of the game. I can see the arguments for the option: characters like Ashara, Nadia, and Kira are romancable and more-or-less Light-sided, why shouldn't Jaesa be? On the other hand, sometimes you've gotta play the hand you're dealt in a RPG. You're not always going to know what happens ahead of time and you're not always going to get things your way. Gotta learn to adapt, either way.
Then again, I already have my Imperial Light-side romance with Mako on my BH, so maybe a purely Dark-sided romance full of murder and mayhem is just what I need to balance things out.