I want to be able to set this to any value, not just the common ones. And yes, there are songs that require uncommon snap - I need 1/5 beat snap for https://osu.ppy.sh/s/117126 . The song's swing is 3/5, so it's only possible to map higher difficulties with 1/5 beat snap. It's bad to make perfectly rhythmical songs unmappable because of a pointless restriction.