Allow users to follow creators so they see when they have released a new world or avatars.
It may work best with just worlds for now.
So for example if I upload a world and someone likes that world and wishes to see more from me they can follow me and when I upload a new map it will show up under a playlist. Similar to favourites etc.. Lets say you allow users to follow up to 3 creators so they get to see their worlds under 3 seperate playlists.
Or you could have 1 playlist which is just called Following and only shows worlds from creators you follow.