*shoots @CJC

This is exactly the overambitious ideas that leave us with cancelled projects. That would be 3 full maps and something like 2 years worth of contests before we ever get an overworld. This idea may be better for a community quest (scaled down) or maybe later additions.

I think it would be better to stick with a one map one contest limit.

Speaking of graphics, I think it would be best to use a versatile tileset and EZGBZ isn't. Speaking as someone who has used it it can feel very limiting if you aren't specifically going for a pure GB style quest. I think tilesets that mix SNES, GB and others would be best. I have limited experience with tilesets. I have only used EZGBZ, Pure, and BS and I think BS feels almost as ancient as classic.