No thanks.
I'd rather not have players upset because I unfollowed them. Sometimes, there are people who I just... don't want to follow anymore because they've changed into a less likable person or some other reason. It's just awkward and kinda rude when people go up to me and say 'You unfollowed me!'.
If someone unfollows me, I usually notice if it's an active member on the forums but I don't go around whining to them. Unfortunately, some people do....
I understand what you're saying Nikoshka, but most reasons of unfollowing someone, is for not being active, as you said, they've changed, or they got a ban, whatever. But for example, If I find @xMegaCoolx changed, and I dont like him anymore, thats fine, but however, something to add to this suggestion, is maybe say why you unfollowed him, so then (s)he knows why, and then they say like uhh I'm sorry I'll be normal again blah blah, and then you can follow him back. Dont you find it, again annoying when you have someone who unfollows you and you have to litteraly search who unfollowed you (If you are addicted to followers).