it is not iTunes that do not use it but rather speed and usability.

Yesterday we had some friends at our house and have been listening to Music with MM, most time with Monkeyflow in Fullscreen mode. One asked me what mediaplayer I use and that it Looks like a cheap iTunes copy (I don't even use the imonkey Skin, whatever). He told me the coverflow view is totally outdated and apple doesn't use it for years.
Well, he just called me to ask where he can download MM + Monkeyflow :D