Store genres from MusicBrainz
Next release of MusicBrainz will have genre support. An example can be seen at https://beta.musicbrainz.org/release-group/3bd76d40-7f0e-36b7-9348-91a33afee20e (JSON web service output: https://beta.musicbrainz.org/ws/2/release-group/3bd76d40-7f0e-36b7-9348-91a33afee20e?fmt=json&inc=genres )
Should whipper try and get these genres and save them during the rip? Or is that too much bloat?
As a user, I think that is too much bloat. Genres are quite subjective, especially in contrast to all other data MusicBrainz provides (release dates, authors, titles, etc.). I think this is best left to a third-party tagger, such as Picard which can efficiently work with MusicBrainz data.
I think it would be a neat feature to have. It probably won't add that much code. Don't feel strongly about it, but genres being subjective is not something that worries me that much.
Don't feel strongly about it