Though I don't use Audition much, this sounds like a really cool idea!
Well, I originally suggested this for Premiere Pro, but it would be nice in Audition as well. Yeah, I really hope that somebody with the skills needed to make this a reality looks into this some time. It would be so useful.
It's not something I'd have a use for but I can certainly see the logic to the idea.
We're lucky in that the Audition developers pop by here from time to time so they'll probably see this but can I suggest that you can make this a formal Feature Request by posting HERE: Audition Feature Requests
That'll get your idea in the queue for sure.
There's also a newish feature on these forums called "Ideas" where you can make suggestions like this for people to vote on and discuss. For some reasons it's only visible on the "Content" page and not all the other ways of viewing but it might also be worth posting there.
Funny, I had no idea there was a feature request section for Audition on this forum! I'm mainly in the photography forums and you must go to a separate site for suggestions (feedback.photoshop.com).