A filter option to prevent things you post on other Steem dApps (dMania, Zappl, DTube) from posting onto your Steemit blog would be a life saver.
True! People also should be able to choose which feeds they want to follow, when they click follow. All, of just blogposts or everything with zappl tweets, dmania entries, etc...
That'd be really cool, too. Maybe even separate feeds for each one, though, while convenient, that might end up hurting the other platforms...