THANK YOU.
YES!!! This is EXACTLY what absolutely MUST be implemented into OS X. I don't even care if the default behaviour is full screen, let the whiners in this thread have their precious fullscreen function as default, so as long as everyone is happy, there is no reason why Apple can't and should add this into System Preferences.
I don't understand the hostility towards this OPTION, why are there so many arrogant mac users against choice? Would a system preferences pane like that be SO bothersome to them that it'd make their lives so bad? Would it even bother them if Apple simply opened up the API and allowed 3rd party developers to make apps that let power users adjust the behaviour, thereby, leaving the whiners without reason to complain about the green button being changed?
It doesn't affect them AT ALL. Someone please explain to me this obtuse behaviour.