I've recently been heading over to mastodon.social to look at the Explore tab, to find some banger toots. I think it would make sense if, in a distributed way, different "providers" could implement their own Explore tab, which users and or server operators could subscribe to. E.g. if mastodon.social wanted to be a provider for its own Explore tab, I could subscribe from here and not have to head over to my other account to view it.