Live Run does look like it'll be a pretty fun concept, if everyone is able to pick a star player (should they choose) then no one can fairly complain that they're stuck with a weak player because they didn't get in quick enough. Seems like it'll be a worthwhile alternative to regular OTP.
I can already think of some weird situations that will occour while playing this mode, for example when Kevin Garnett is in my squad and he's also in my opponents squad , It will be fun to watch which KG is better