@Mastodon In the long term, @fedidevs will most likely focus on capabilities outside of the design of Mastodon Collections: longer lists, curation by multiple owners, etc.
Smaller packs more personal in scope might make sense to be moved to a Mastodon Collection. We'll leave it up to everyone to decide which service fits their needs better.
The safety features mentioned in the post (be notified when you are added, ability to remove yourself) will also be provided by our implementation.