I often get incorrect matches in the music section using FLACs. The tags in my files are correct but for some reason the scanner decides that a certain artist A is actually artist B and currently there's no way to correct them in Plex/Web. Very annoying.
This could be fixed easily if there only was a field on album level that allows you to set the artist's name. This would also allow you to clean up those cases where you have two albums by the same artist, but the artist name is spelled differently.
It might also be worthwhile to :
-> Have multiple album artist fields, so you can split the artists from the album into several fields so the album shows up onder both artists in your collection instead of under a new artist.
-> Be able to set the album on the individual track. Sometimes these albums get detected incorrectly as well.