while i have yet tot ry this, but will, it doesnt address the issue of the start menu opening progams where it resides and not on the last screen they were used. seems like this is simple enough for 7, why not 8?
edit.
I did try this and the short cuts on the task bar show on both screens and cannot be removed from 1 or the other, only show on both or removed from both. further, they don't assign a start up screen for the app either. some apps will start on the last screen, mostly only windows apps like media center, but not all.