I agree with this.
Every new expansion, make it so that every character who hasn't been played on for the entirety of the previous expansion (e.g. Dawntrail, anyone who didn't play during ANY of Endwalker) has their name changed to something like "Placeholder [Random Characters]" and is given a free Name Change, freeing up all the names for everyone who wants to do an overdone joke or just really wanted to name their character something that was already taken.

I don't remember when Maplestory did this last but they do it every few years for characters below a certain level range.