Gnome 3 removes ‘max’ and ‘min’ window controls – but why?
I welcome this change. I can totally understand the reasoning behind this change for Gnome 3's Shell. The linked posts are worth a read. I'm sure there are people disliking this as it is a very basic change of something that has been there for a long time. But there are nowadays just better, more intuitive ways to change the window size. And minimizing doesn't make much sense the way Gnome Shell works.
I'm still waiting for the Ubuntu button change to get justified.