Since i can preview samples from the explorer in vegas then why not add the ability to add samples to the timeline in realtime, like using space bar to play the snare over a few bars and its added at the correct time to the timeline. Can be done with markers but , yeah i think it would be a nifty little addition to Vegas.
Add to that the ability that if you hold down the Space bar then it will retrigger repeatedly according to the grid setings.....Luvely.
i sure hope they give us higher res on the grid as well.