I miss multireddits, a workaround I found is to create accounts on different instances and subscribe to different communities with each account ie
News trabic@lemmy.world
Memes and other bullshit trabic@lemmy.one
“Math” trabic@lemmynsfw.com
Then just login to which ever one I’m looking to browse. I don’t think this will screw with the fabric of the fediverse, is there any reason I shouldn’t?
Jerboa and Connect do that with account switching too.
Lately I’ve been leaving different accounts in different apps to reduce confusion. Having the same user name on the different instances is a bit confusing with the account switcher.