Our game images are actually webp, even if they are tagged as pngs. TD knows the specifics, he does the compression of statics every time I hand him the 4k raws.Have you looked into using Webp instead of PNG? Lossless Webp claims to be 3/4 the size of PNG. 25% would be a big difference in the download size at this point.
NO UGil is the best, he made Detective Mina.
And then there are wild unbound beasts like Red, who should definitely be working on a game. At the very least his art keeps the rest of us humble.