IIRC Windows 7 start menu didnt have a 'most recently used' programs, rather, it is the 'most frequently used' list.
and Windows Blue 9385 has a similar 'by most used' view mode in all apps view http://tinypic.com/r/2r3ulog/5
there is also a 'by date installed' view mode, to find recently installed apps.
other changes: newly installed apps doesn't show up in the start screen automatically, you have to pin them manually. and you can't move tiles around your start screen in the default view mode, you need to explicitly enter a 'customize' mode to do that.
So, you start screen is much more stable now.
I'm talking about build 9385 only, of course.