You must be new here
dA isn't a terrible site; they do a lot of things right, but they don't have the best history of implementing user's suggestions. It's all pretty random - some things get done over night by one developer, some things take years (the groups system), and some things come out of nowhere that no one wants
Until they implement something like this though, just knowing you'll lose track of your closer friends if you add too many 'cool artists' kinda helps.