Charlie,
I can answer this one with ease:
"Regarding the concern mentioned of aesthetics of pickers; I don't recall this concern ever being mentioned prior to this post"
But I am afraid if I do, my post might get deleted. If you are interested in my point of view, here was example sketch I made:
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=623604#Post623604
We can have aesthetics conversation in that thread if you wish, not to derail main topic of this one, which is using main RT picker (or clone of it) for Utility tracks.
----------------
"None of the posters seem to be aware the StylePicker Tobin accesses in the video..."
"The normal picker is still available on all of the BIAB Mixer Legacy Tracks"
But not for Utility Tracks!

I strongly believe a normal RT picker should be used for Utility tracks as they deal with the same real tracks, therefore the workflow in all the reason should be the same.