Tbh for now I'd be happy if I could just favorite communities and have them appear on the top navbar instead of just random ones.
I agree though, I don't care about "being like reddit" and if ernest finds a better implementation I'm all for it... but I want more granular approach to curating my content beyond just "subscribed or not". I had a multireddit that combined tech and software news, one that combined gaming news, one that combined my hobbies like board games, etc.... It's a very practical feature and it'd be even more so with all the fragmentation of instances.