accidentally create a wall of text here so umm click me?
the wiki wrote:
These are the typical levels of difficulty that a beatmap can fall under. Specific definitions and requirements of each can be found in their respective mode's ranking criteria.
osu!:
Easy
Normal
Hard
Insane
Expert
Expert+
osu!taiko:
Kantan
Futsuu
Muzukashii
Oni
Inner/Ura Oni
Hell Oni
osu!catch:
Cup
Salad
Platter
Rain
Overdose
Overdose+
osu!mania:
Easy
Normal
Hard
Insane
Expert
Expert+
Note how the wiki does not mention the diff name for anything 7* or higher here, and even tho it dosen't seems to be a problem right now (cuz i'm sure like 99% of current mappers wouldn't need to make a 8* star map for their spread), it may become one in the future because of how the game is advancing further and further. Due to this, i feel like we need to find a good default diff name for these super high star map.