There's been some kerfluffle over GNOME 3 removing minimize and maximize buttons. Here's my two cents!
I've been using KDE4's lovely netbook interface fairly extensively for a couple of months now, and I've grown to love it. Although minimize and maximize both still exist, at least, their importance is greatly diminished. All windows are maximized by default, and minimization is accomplished with smart hiding. I.e., if I click the activity with which I launch applications in the activity switcher in the panel, all windows get hidden.
This is only annoying (and easily remedied at that) once in a blue moon, when I'm trying to drag and drop between applications. Otherwise, it makes sense and is exactly what I want. One application has all of my focus at a time, which is exactly what I do on other desktop environments anyway. Everything else is just an alt+tab away.
I believe this is a tentative step in the right direction, but Gnome is going about it all wrong. Features in flux shouldn't be removed for removal's sake (which is what seems to have happened,) but de-emphasized by other smart design chioces.