I have a feature request related to this:
Loooong time ago when using Finale I loved the feature, included in Hyperscribe, to use an external Tapping source to record on the fly, being able to tap the beats (for example “tapping” the sustain pedal or some other button or midi controller) during the recording and being able to slow down and accelerate during the recording, and Finale calculated the rhythms correspondingly: it was the absolute fastest way to input notes that I ever experienced. (without depending on the stiff metronome tempo). It would be wonderful if this functionality could be implemented in future Dorico versions.
In case someone doesn’t know what I am talking about, here a Video that demonstrates this feature (scroll at 10:29) 10-5A Getting The Hang of HyperScribe Lesson 5A (Advanced) - YouTube