Oooo I would like this option.
Not sure if this has been suggested yet but how about we get more options when subscribing to a person? Like...maybe boxes you can check, a bit similar to deviantART where you can check if you want to se if the person who you subbed uploads a char, uploads art, when one of their chars is faved(and thusly seen in your feed) and stuff like that. And maybe an option or checkbox so you can show who of those people are your friends?