This line really could have a lot of potential, especially if they continue the quality of figures that these initial sets appear to have. All three that we saw this weekend look pretty great to me, and I intend to pick up all three if I can find them. Hopefully this won't be a "limited" line, and everyone can find what they are looking for. There are so many other characters they could touch on in this line, and if they are going to be of this quality, I'd like to see more sets get made.
Obi-Wan Kenobi - TPM/AOTC/ROTS
Han Solo - Stormtrooper/Hoth or Bespin/Endor with Trenchcoat
Luke Skywalker - Stormtrooper/Bespin/Jedi with removable Endor poncho/helmet, etc.
Princess Leia - Ceremonial?/Boussh/Endor w/removable poncho/helmet, etc.
Padme - Take your pick, lots to choose from. I actually wouldn't mind having another, non screaming head version of the AOTC white outfit.
C-3PO - Maybe not enough versions, but getting an Endor (bendable knees) one would be nice. A new AOTC version wouldn't be a bad idea either.
R2-D2 - Really doesn't change much, probably not necessary.
Chewie - As much as I like him, probably the same as R2. Between the ROTS, VOTC, and EB versions, we are fairly set.
Imp. Troopers - Stormtrooper (VOTC)/Snowtrooper/Biker Scout
Clones - So many color/helmet variations, they could do more of these (Kashyyk, blue version, Shocktroopers, etc.)
Rebel Troops - Fleet Trooper/Hoth Snowtrooper/Endor Soldier
Battle Droids - I'm not the biggest fan, but a Battle Droid/Super Battledroid/Destroyer Droid combo makes sense.
Bounty Hunters - Lots of combos, maybe two sets - Jango/Boba/4-LOM/Zuckuss, etc.
More ideas available, but this could be a nice assortment for Hasbro if they keep the quality up.