The current shortcut experience is not very good, can customize the words is even better!
Like Procreate and ArtStudio, AS supports more things, and the experience is more than one level higher than Procreate!
I use Nomad on an iPad Pro 12.9” 2018 model.
When I use ZBrush on my Windows PC I use keyboard shortcuts all the time but I do not use a keyboard. It is faster and simpler to program multiple keystrokes like Command Z to a single button of a Wacom remote or a gaming keypad like the old Nostromo. For my next Windows PC 2in1 laptop I will probably buy an app that lets me make custom on screen virtual buttons containing multiple keystrokes.
I use my iPad in my lap. Sometimes I’ll prop it up, unfold a portable Bluetooth keyboard and type, but there is no way I can easily draw/paint/sculpt on the couch or in a coffee shop with a keyboard for hot keys. I need one hand to hold the iPad and one hand to hold the Pencil.
I have looked at programmable VR game pads and the Tap Strap to program hot keys for the iPad but both are more awkward than useful.
I think it would be better for Nomad to adopt a programmable Edge Keyboard like in Clip Studio Paint or a thumb activated Quick Access palette (Clip Studio Paint) or radial menu (Wacom).