I’d love to see a separate slot or apparel type for backgrounds.
A separate apparel type would allow backgrounds to not show up in mining and battling activities, which would allow backgrounds to not be strange squares in them.
This would ideally allow the removal of the 80% background rule, which as it is just makes making backgrounds more complicated.
(The 80% rule doesn’t really stop the weird square problem already, but I can’t think of another reason for it. If anyone else knows why they would implement this I’d love to hear it.)
Edit: this could be implemented using the already-existing background tag, so no re-categorization manually should be necessary.