It'd be nice if we can configure drinks to not have the enchantment sheen, for things like soups and tea.

Do you mean this enchantment glowing on the brews? Sadly i don't know of any way to disable that without accessing nms. Currently we store data in a potionEffect on the potion, so removing all effects is also not an option.

This thread I found may be of use to you.
https://www.spigotmc.org/threads/removing-enchantment-glow.196021/

On this note, an entry allowing optional description text would be great.

This thread I found may be of use to you.
https://www.spigotmc.org/threads/removing-enchantment-glow.196021/

On this note, an entry allowing optional description text would be great.

Well it says it's not possible

We will not use custom potion effects for data in the future, so this might resolve itself then.

That is good to hear. I'll close this for now until we see the new version.