-Kashyyyk Beachead: SA BARC Trooper, Repaint Preview Wookiee Warrior (new gun), New Sculpt Wookiee Warrior, Beach Obstacle(s). To me this set would be worth sinking LOTS of money into for army building purposes.
-Temple Investigation: Yoda, #41 Sculpt 501st Trooper, New 501st Clone w/hideable hole in chest for Yoda's Saber. Another set I'd buy at least a couple of for the Clones.
-Separatist Assault: More an army building set than anything, but it'd just be a new SBD, and 2 (non-bendy-cheap-plastic) Battledroids.
-Shaak Ti's Demise: The prototype Shaak with the chest hole, a good Grievous with removable cloth cape, New Magna Guard (SA).
I'm all for some of these figures making it to basic cards too. I think Hasbro's short-sighted with figures they slip into "multi-packs" or exclusives and not put out into the basic line. The Wookiee's, clone's, etc., would all make good basic release to make a little more moolah... Maybe not when the set's released, but down the road a short foreseeable distance perhaps.
My ideas are more 3-packs and less scenes (kinda lacking in accessories which sorta make the screen scenes what they are), but I think they'd make nice 3-figure boxed sets. Worth the $15 - $20-ish pricepoint. I think $20 you HAVE to dish out something special though in that the figures must be highly desireable and new... The Jedi Council sets have proven that $20 for rehashed crap isn't really acceptable to the masses.