I just wish it had a built in way for normal users to share read/write individual lists and calendars. Afaik you have to kludge it together with symlinks.
But then again, any users would also then need multiple accounts for read/write share if you don’t want everyone seeing everyone else’s stuff
My partner and I have each our account, with private calendars in, and a household account with the shared calendars in. It's not perfect, but it works for a small group