Hello @andhy - forgive me, I know very little about all of this, and have no personal/particular interest (other than a desire to see the broader community thrive.!)… but, my curiosity was piqued.
I see someone has built this really slick looking online Expression Map generator for Cubase:-
Expression Maps Generator - Create expression maps quickly - Cubase - Steinberg Forums
Now, it says in the body of the posts there, that the tool can’t build ‘Dorico Expression Maps’ since it is inherently different to Cubase, regarding its ability to handle articulations based on note length. However, it is stated that Dorico can import Expression Maps made for Cubase, which, presumably from there one would apply any desired tweaking or other anyway…
Ok, so I’m already well out of my depth; just wondering if this kind of tool might help folk like yourself, take away some of the tedium of creating these things from scratch… Maybe have a look when you’ve some time…