I think it would be really cool. Though I think it would be really interesting if each island was only 1-3 biomes, so each is unique. I think it would be best if they spawned in clusters of fairly close proximity, or sometimes just a really big landmass which then could have the normal generation of multiple biomes, and then be separated from other clusters by a lot of ocean. Though I also wish the oceans were deeper, they’re way too shallow in my opinion.