I love this idea. This Spring's Game Market also had a Ziplock Alley (チャック横丁 Chakku Yokochou) where the entire game had to fit in a ziplock bag. It's nice how the TGM format encourages designers just getting started.
Please let me know if you need any help with organizing or running this.
I have been hoping to see something like the Japanese Game Market start up stateside for a long time! I'm thrilled to see space being made for smaller, weirder games. I will fill out the form to submit a game soon, but I will be attending even if I'm not tabling. Can't wait to see what gets made!