Another great benefit from this feature RANKED is that instead of just having a small range of maps that give insane amount of pp, speeding up other maps will allow players to have a much wider variety of maps that they can gain PP from. This feature makes a lot of sense with the new PP system, since it's based on raw values (jumps and streams etc.)
If made UNRANKED only, people would still have a much wider variety of maps that they can practice on a specific BPM on, instead of having to search and search to find a map that has a good amount of streams for the bpm, etc.
It would certainly make osu! a much more versatile game, and it works for mania also who wouldn't love to see rrtyui, sayonara-bye or Wubwoofwolf beat an Extra with x1.7 speed!.
If made UNRANKED only, people would still have a much wider variety of maps that they can practice on a specific BPM on, instead of having to search and search to find a map that has a good amount of streams for the bpm, etc.
It would certainly make osu! a much more versatile game, and it works for mania also who wouldn't love to see rrtyui, sayonara-bye or Wubwoofwolf beat an Extra with x1.7 speed!.