Voted on both.
Blackbart, you'd probably profit a lot by the second-most voted on request,
Edit Groups. That combined with area selection, and you'd be set to edit even hundreds of tracks with a easily customized focus on any group of tracks.
You folks also require the BPM + SMPTE time rulers, and all of us in post production require time-based grids of course. I just
wrote about my experience with Reapers automation system compared to a session on Protools HD with an Icon which was sobering, again.
Remember to add your votes and words to the devs about the importance of those requests.
My guess is that Christophe is the one who can do the Quicktime audio track extraction. They created a bridge to the 32-bit Quicktime libraries for the 64-bit version of Reaper, so hopefully that's not a huge problem if FFMPEG isn't quite up to that kind of task.
@Riddler, can you play alternate audio tracks in VLC ? If so, we might stand a chance of FFMEG doing this easily.