My idea?
$20.99 new E-Web Cannon set... Completely foldable legs, otherwise pretty simple snap-together pieces to make a new to-scale gun. Include a general Veers update (use the TVC AT-AT Commander with a new head and I'm happy), and a Snowtrooper... A new head would be neat, but whatever. The gun needs a gunner is all.
$15.99 2-packs... Battle of Hoth themed sets, to be specific. One set, a Hoth Rebel Trooper head variation (new head and hat), with a new weapon. And a Repacked TVC Echo Base Trooper.
Second set is a different Hoth Rebel Trooper Head variation (again, new head/hat, new gun or the basic rifle with this one perhaps), and a kitbashed Hoth Rebel Technician/Taun Taun Wrangler (mostly just the Echo trooper with a new head/hat). Each set includes one piece of a Hoth Computer Station (which nicely compliments Torryn Farr!).
Just thinking about the quality of the K-Mart sets... I'd be happy seeing them carry forward with the $21 and $16 format... One nice big accessory update, and 2 nice 2-packs of army building fun that's quasi-new but not really.
I could see this expanding to other larger accessories too... A new, better curved bar section, perhaps? Or a Vehicle Maintenance Energizer? Possibly an update of some other mini-rigs like the MLC-3 or CAP-4? Small things, very OT-centric... I think these would be awesome if they kept rolling out once a year.