Now this is a thread I like.
Seeing as Clone Wars is all the rage, I would like to see a rerelease of the ARC-170 ('cause the 2005 v wasn't all that great) and the Tri-fighter, as well as another General Grievous's fighter ('cause neither the ship nor the minifig is very appealing). Padme's yacht (in grey) is another possibility.
One thing I've noticed is that everyone is focusing on major characters (Anakin, Obi, etc.) rather than the more generic yet wanted minifigs (BDs, pilots, etc.) It's not as likely that LEGO would release sets with major characters because nobody wants an army of Qui-Gons and Lukes battling armies of Count Dooku and Jar Jar Binks.
For OT sets, following my previous statement, I want one more snowspeeder and X-wing, please without Lukes, because that would sell more. Also the Outrider, because if LEGO can release a TIE crawler or the Rogue Shadow, they might as well release an EU ship that's a little more known, because it would sell better. A UCS Nebulon-B Frigate or Dreadnaught (it could happen) would also make my day.