I have a Lemur template that allows me to select from a bunch of macros via buttons on a tablet (for example - quantize ends, set velocity 100, transpose 8va, etc.). But often it would be handy to have some hotkey-driven app that provides the same kind of functionality on the screen so that I don’t have to use the tablet.
Is there any way to re-create that functionality with some kind of pop-up linked to a hotkey?
Yes, I think you can easily do this on screen without the tablet. I have read something about it with AutoHotkey if you’re on Windows. Check it out.
I understand you want a hotkey menu for these actions. My idea was to make the core shortcuts so easy to remember that a reminder wouldn’t be needed, but a dedicated pop-up menu makes total sense for complex macro triggers.
I’m familiar with AutoHotkey but I haven’t seen it used to create an on-screen matrix of buttons - do you have a link to an example of that?
Check the app (featured topic), in my user card. 
Ooh nice - yeah that looks like what I’m looking for. I’ll check it out!