Tony, you might never use the features new mixer has to offer, I had some issues with it too in the begining, but once I played around with it for couple of days, I saw many benefits it can offer and discovered logic behind it.

Also, to my understanding they are planning to expand on idea of Utility tracks, If they done it (partial regeneration of tracks in BIAB) they most likely could automate that process and make it more user friendly...like selecting bars and regenerating just selection part. Who knows.

I believe this update is a start of something very significant. People just didn't realize it yet smile