I have a collaborative playlist with a friend that we both like. However, we both want to share the playlist with other people BUT we don't want them to be able to edit it. The issue with a collaborative playlist ATM is that everyone has access.
My suggestion therefore is: Please make it so when you make a playlist collaborative, you can choose for everyone to be able to edit (like now) OR choose specific users that you give the rights to edit the playlist.
Spotify is an amazing program and I honestly cannot believe this has not yet been added.