I think it should be a guideline that says something like "Use the description to describe the map" sort of deal. Hunting for details such as seasons for anime openings/music, epilepsy warnings, language/bg warnings, and general song information for those who never heard it before would be nice. It doesn't even have to be 250 words, just enough to get the point across. An example:
The insane has a bunch of jumps/star patterns
The taiko diff sounds best when you turn sound effects up to maximum.
The video has a few spoilers if you haven't watched season 4 of (insert anime here)
Thanks for playing! Try my other maps! <3
I doubt that is 250 words yet it explains a lot more than
this.