cool idea! yeah, seems fine to me if you want to put in that extra work. i don’t see a problem with it, as it seems to fit within the rules. Polyducks will have the final say, but i’m going to guess he’d be fine with it also.
Confirmed this is fine. It's part of the default output for GBStudio. The game output area is the only part that needs to be 160x144.
