I agree with Stormtroopers being the only "grunts" that I'd actually clamor for. They're iconic enough they should have their own figure.
Marshmallow would be a really cool figure. Maybe when Frozen 2 comes out? I don't want to turn this into a wish list, but an Admiral Ackbar figure would also tickle the geek in me. **** MOD NOTE **** Yes, please, do not turn this into another wish list everyone.