For me the two most eagerly awaited possibilities would be :
1) real multi-cam editing, FCP does it already.
2) Ability to use Firewire or USB connected audio mix surfaces like the TASCAM or the Mackie DAW desks.
Beats the hell out of trying to mix witha mouse and would avoid having to go to an other app for
simple or even complex audio mixdown jobs.
That two already? D*mn !!