Wings are active, and fun. Movement is fun.
Do what you need to do in order to balance things, but please be careful when you take away the "fun".
I would wager there are tons of FVS out there who would be happy to lose AoV, Divine Punishment, etc. just to keep their wings. There are tons of people who play Air sorcs JUST for wind dance - and not because they plan on boss kiting.
Wings make it an active game. It sucks that the monster AI can't figure that out.