This will likely sound really nitpicky and self-centered, but in my opinion, using the difficulty names "Extra" and "Expert" in the same mapset is really irritating to me.
I propose that a guideline is introduced that states the following:
Maybe something less wordy? But along the lines of that.
My reasoning for proposing this be added as a guideline instead of a rule is that I do think there are acceptable use cases. For example, take an Extra difficulty and Expert difficulty being the same star rating, but Extra is a lot more gimmicky. I feel like this would warrant the difficulty name "Extra" better in the context since it would stand out from the rest of the mapset, making it more of a true "Extra" difficulty, as if it were a bonus stage.
I propose that a guideline is introduced that states the following:
The difficulty names "Extra" and "Expert" should not be used together in the same mapset. A difficulty name like "Extreme" should be used to indicate a difficulty that is a difficulty level above Extra/Expert. Two or more maps that are intended to be the same difficulty level should all use Extra or Expert, but not a combination of both.
Maybe something less wordy? But along the lines of that.
My reasoning for proposing this be added as a guideline instead of a rule is that I do think there are acceptable use cases. For example, take an Extra difficulty and Expert difficulty being the same star rating, but Extra is a lot more gimmicky. I feel like this would warrant the difficulty name "Extra" better in the context since it would stand out from the rest of the mapset, making it more of a true "Extra" difficulty, as if it were a bonus stage.