I had an idea for a brew naming/creditting system that could add some nice flavor on Multiplayer servers. How that would basically work:

Brews would still have their default names, Wine, Iron Wine, Cider, and so on. The brewing barrel would have the option to give a finished bottle a new name. The barrel requests confirmation of the rename(if that's possible?), and once confirmed is fixed. You can't re-rename a brew. If this renamed brew is used to seed future brews, those bottles also all inherit that name. This allows you to quickly and easily form your own brand or stick your name on your product. Further, if someone takes a sample of your brew and seeds their own, it will still carry the name you applied to it, so everyone on the server knows that's your work.

Admittedly this is mostly a flavor thing, but I think it could add a lot to the community interacting with this mod.