TPM: QGJ, OWK, Maul, Sidious, Jar Jar, Lil Ani, 3PO
AOTC: Padme Arena, Ani, OWK, 3PO, Dooku, Yoda, Mace, Clone
ROTS: Ani, Obi, Palpatine (Office one), Clone (just white), Padme w/Luke & Leia babies
ANH: Grand Moff Tarkin, RFT (Rebel Trooper), Antilles (Rebel Officer), Wuher (Bartender), Evazan (Space Criminal), Sandtrooper, Scanner Tech, Rebel Tech, Imperial Officer (just a grey color), Death Star Trooper (just black), Garindan (Long snoot), Owen, Beru, Wedge, Biggs, Han Stormtrooper, Cantina Band Guy.
ESB: Rebel Tech, OWK Spirit, Dagobah Luke, Bespin Escape Leia, Rieekan, ICMG
ROTJ: Removable Helmet Vader, DSD Luke, Ephant Mon, Bikini Leia, Yarna, Doallyn, Oola, Y-Wing Pilot, Black Astromech (R2 or R5), Endor Rebel Officer (Vest guys, just for some variation), Human Jabba Goon with the fuzzy hat, just for something obscure...
I'd even take some EU... Thrawn, Mara, C'Boath, Jedi Luke, Older Han and Pregnant Leia, etc. I'd be against obscurity at the PT level, but not at the OT level... For OT, I'd honestly take anything they'd make in the old style. ICMG would only be the tip of the iceberg to me, but the must-haves I listed for myself here.