It was brought up couple times in other threads that people have large amount of styles they are willing to contribute, but currently there is no easy way to do it except upload them one by one.
Allowing bulk uploads is not a problem, the problem is how to attach metadata (like artist, song, keyboard model) to styles in bulk. Asking users to also provide something like an accompanying spreadsheet with song names is probably not going to fly, putting together such spreadsheet would be just as tedious.
I also don't want to just allow uploading styles without any extra metadata as it would defeat the whole purpose of this site and we will go back to a huge dump of random styles of unknown origin.
I was thinking of creating a separated section on the site acting something like a style "dumpster" where users can dump all their styles without any metadata. And then the hope is others will be digging through this pile and gradually adding metadata. Once we have enough info about a style it can be moved out of the dumpster.
This way if someone just wants to contribute large amounts of styles but doesn't have time to organize them they can still do it, and the burden of organizing styles gets shared among users who will be enjoying these styles, which sounds fair.
I feel like this is probably what stops most people from sharing their styles using the current upload form, which works ok if you have couple styles to share, but submitting 100s of files this way would be unreasonably tedious.
I think this is probably the next feature we need to implement (which shouldn't take that long). What do you think?