It would probably look like Agent 327, a project by Blender Animation studio. It's based on the comics of Dutch artist Martin Lodewijk, and it actually looks fantastic.
It's gritty and funny and weird and just... inventive.
Blender Animation Studio is currently seeking funding to make this movie. I hope someone ponies up the cash. They might even consider crowdfunding because I'd pay a bit of cash to see this thing made.