Have you checked the new multi-action function on the latest streamdeck FW-- I’ve yet to play with it in Dorico, but in other applications it is an intuitive and easily set-up macro monster.
I was so taken by the first rides with the stream deck I got myself another one (as of recently, multiple decks are supported so you can split the chores handily), and I am in the process of scanning all the buttons of the Dorico interface to individual button graphics (will gladly share BTW).
I should have studied key command availability beforehand, though, since it turns out many of those buttons (e.g. the calling up of the dynamics/meter/key sig menus on the right side of the screen), as well as many of their sub-commands, are not yet in the KC realm. I haven’t yet researched whether this will evolve in coming updates, or if it is hard-coded menu politics-- I sure hope the former!
So right now I am studying the prospects of an ideal StreamDeck workflow, with all the Folder/Subfolder options, I’m sure there will be a few iterations before I’ll settle on one solution. With 2 Decks and thus 30 keys at my disposal, my current guess is a number of frequent direct commands on the top plus a convenient Folder structure on the remaining keys.