As I work in architecture, I use a system adapted from Microstation, which has a category for each left hand key, i.e. Q is for curves (QE polyline, QR Rectangle, QS polycurve etc), W for 3D, D for dimensions and so on. That gives me about 120 shortcuts, most of which I remember, so I very rarely have to type out a whole command.
No shortcut is more than two keys, and most shortcuts are optimized for typing convenience.
Mind you, this is not a 100% rational system, some of it I just made up as I went along.
I find it incredibly useful to have view commands such as hide, show, isolate and invert selection mapped to V_, so that larger models are easy to navigate.
I keep the aliases here:
aliases 231201.txt (2.9 KB)
