So, I have a problem mapping songs with complex time signatures (9/4, 11/4 etc.) because osu! doesn't support such signatures (the maximum is 7/4). Also there are a lot of songs with signatures like 4/8, 6/8 etc. and it's no problem if the numerator is even, like 8/8 = 4/4, 10/8 = 5/4. But if the numerator is odd, then it's not possible: 5/8 = 2.5/4, 11/8 = 5.5/4, and I have to double the BPM so 8 notes become 4 notes. I think it would be much easier if mapper could choose any numerator from 2 to 20 (yes, 19/4 is possible) and any denominator which is a power of 2 until 16: 2, 4, 8, 16 (though, there are songs with time signatures like 23/12 and such, but this is rare and may be too complex). I think the limit should be 16 because 32-s are rarely used as a signature-defining note length.