One thing I would like is the easy option to browse another instance’s local content without being in that instance.
For example, I like my instance (mander.xyz) for being very science focused, but I might like to browse all subs in programming.dev if I want to browse some dev-focused content.
That’s true. I’m not sure it would be a good feature, because you would inevitable only see a certain view of the instance. For example your instances blocks certain communities of that instance (don’t know if thats possible but lets assume it is), then you wouldn’t see these communities.
I’m fine with the way it is. Also you can post to that topic, you just need to search for it in your instances UI.