That’s a neat idea. And then I could just use different layouts for the different versions of it. I may actually go back and update it to work exactly this way. The naming is tricky, given e.g. violin section vs. solo violin in a small ensemble; but I think that’s fine. The instrument name in the score just has to be clear.
This thread has an interesting discussion of the other bit I was thinking about: audio export. (TL;DR: move the layout to the top of the layouts list in Setup mode and Dorico will export that.) Given the final recording approach I took of actively performing all of the recordings, even if with samples, it wouldn’t matter for that final output, but it did matter for my “work-in-progress” passes.