I use FB because my family is on their.
My feed is almost entirely not my family, but “suggested” posts, and it made me realize I really hope something becomes popular to replace FB next and my family moves there.
What type of site do you hope becomes popular on the fediverse next?
A federated SoundCloud would be nice, especially SC became paywalled
There is Funkwhale that you can use for self-publishing music. You can also upload your music library privately to listen to remotely.