not really a super important request, but when you upload a beatmap, the thumbnail crops to the center of the background, which can cut off parts you might want to be shown in thumbnail if they are on the edge. So maybe there could be a button right next to the thumbnail on the beatmap's webpage, that allows the creator to change where the bg is cropped. And possibly include a button to let you upload a different photo that fits the size requirement of the thumbnail, bc the way osu compresses backgrounds for thumbnails can make them look bad quality and fuzzy sometimes.