Simple question: osu! already has the base normal-soft-drum hitsounds to be used when mapping. To make a rankable map, is it necessary to use your own custom hitsounds or that is just personal? I don't see any reason why I should provide my own hitsounds when the base ones are more than enough, except in the case where the base ones would merge too well with the song and end up not providing any feedback.
But what the guidelines says about the subject?
But what the guidelines says about the subject?