Somebody said once, it went something like:
A good piece of technology does not require a manual to operate.

Which is true in a sense with BIAB. Even if you are brand new to program within few hours you can make a "listenable" backing track. However, having only 7 true mixer tracks was limiting experience significantly.

Charlie, now that we have UTs, perhaps it is a good idea to see what will NOT be achievable with Utility Tracks from items you listed, bearing in mind that at some point, likely they will behave same way as RTs... and to think how these "other" functions that are already in place can be "unhidden" and get appreciated by many users? Perhaps if presented properly and supported by many, it might come to life?