you could accept logins only from instances that have enough trust on fediseer, I think this would work better than the old openid

when you type poVoq@slrpnk.net I already know what instance you’re from

my instance is the worst

Maybe opt-in ads? It could be opt-in for both the instance and the end user

I’m not demanding it to be opt-in, just taking the assumption that you don’t want to just put ads there, and that there would be a backslash if you just put them there

Or some kind of “lemmy gold”