I'll jump on the bandwagon with things I'd like to see discounts on...
FEZ. That, if nothing else. Skullgirls, Dust: An Elysian Tail, Half-Minute Hero, Scarygirl, and Awesomenauts. I'll throw in another vote for Deadlight though I haven't even tried the demo. I'd bite on Deathsmiles 2X at the right price. It's probably too soon to hope for TJ&E, Nights, or Double Dragon Neon, but I'd love to be proven wrong.
As for sales I'd love to see repeated: All Zombies Must Die, Crimson Alliance, Guardian Heroes, I Am Alive (but cheaper!), From Dust (cheaper!!!), Sine Mora, Sonic 4 Ep. 2, Resident Evil 4.
And thanks to Chrono Gear for reminding me of Nights and Jojo's Bizarre Adventure. I'll bite on the latter at 400 or something. Hahaha. F U Capcom.
Oh. And Death Tank, for the hell of it. First DOTW I ever missed. Long, long ago...