Off the top of my head, here's what I'd like to see -
TPM - not happening, but wouldn't mind a new Jar Jar, new Gungan Warrior, Nemoidian Pilot, new Naboo Guard (yellow), new Naboo guard (red), new Obi Wan Kenobi, Gella Twins
AOTC - Cliegg Lars, Beru Lars, Owen Lars, Dooku's Pilot Droid, Kamino Clone Kid 2-pk, new Taun We - each of the Lars could come with the basic moisture vaporator with their own unique attachments to it
ROTS - Nute Gunray, new General Grievous, new Magna Guard, new Padme (Leia hair buns), Midwife Droid
ANH - new Rebel Fleet Trooper, new Grand Moff Tarkin, new Owen Lars, Wiosely, Tonnika Sisters (not happening)
ESB - new Bespin Guard (two skin color/head variants), new Hoth Rebel Trooper, new Ugnaught 2-pk, new Hoth Leia, new Hoth Luke, new Bespin Han, new Zuckuss
ROTJ - not happening, but would like to see a new Gamorrean Guard, new Emperor, new Ree Yees, new Royal Guard, new Wicket, new Ackbar (heck this might be a decent vintage wave if they ever make those again)