My English is bad, hope you understand it :dSome inactive users have really good name (in anime, movie,...), but they just play some songs and drop Osu! Let them keep those name is a waste to the new users and OS who want to change their name.
So i suggest, when someone (1) try to use the inactive users's name (2). (2) will be automatically renamed (ex: Osu1, Osu2,.....) and when they logon, they will have a chance to rename. The ability to rename depend on (2)'s levels.
Ex: (2) with level 99 haven't played for 1.5 years, but (2) with lvl 1 is only 1 month,....