I’d also add better and faster moderation of assets being sold by people who didn’t create them and don’t hold the copyright. I’ve reported many assets to their creators that are being sold without permission. There are even assets ripped from published games being sold.
I’m hesitant to sell anything on the marketplace as it could just be bought and resold by anyone else and from what I’ve heard the review process for getting stolen assets removed is way too slow and difficult for creators who aren’t big companies.