Here's another sonar 8 benefit: You can set the bcf to follow visible tracks in the track or console views as opposed to linking to "all tracks" regardless of their visibility.
So, in short, if you hide tracks from view or just collapse a folder so you can't see them, the bcf will automatically switch to controlling visible tracks.
While that doesn't really address the tracks vs. bus issue, it definitely makes it a little less cumbersome.
I have found that the bcfview virtual lcd strip is useful but I honestly usually forget to load it before staring Sonar so I've not come to rely on it. I haven't been able to make it work under Vista either, for what it's worth.
Thanks for the Kudos on the taining video, smallstonefan!