If you're like me and you have hundreds of friends, isn't it annoying having to go through all those names and remove inactives? So I suggest that you add an option where players are removed from the friends list after [Insert number of weeks here] This isnt anything big, but's its a timesaver and a way to get rid of inactives.
... Thats it.
1) They want to add me so they can follow me and beg to me for crowns and CE which is quick noobish.
2) Random friends are stupid. I don't even know them. Well they just want friends, but I wouldn't talk to them
Rather than an automated system, a sorting feature (last time connected, date of friendship, etc)
Because there's always an exception
Ask for a filter function in your friends list that orders friends via their last time being on SK (both from shortest time offline to longest and longest to shortest). This would speed up your process and bring less labor lost on servers.
I can't speak for anyone else, but I like to keep inactive players who I know pretty well on my friends list, in the hopes that I'll know when they'll come back. Then again, I peak at about 90 friends because I don't accept random friend invites.