Haha, a very closely guarded secret, but, since we are all friends here…
I really don’t have a magic setup, just a really habit enforced one, it’s funny, these come naturally when I’m drawing in SU, but I have to think about it to actually write these out.
(You are observant that my most used keys sit on the left side of the keyboard, so I’m not moving my hand around that much. Also, since I frequently use a Wacom tablet, navigation keys are essential… So nav + rectangle + PushPull are all together on the bottom row… so, starting from the bottom row)
Z,X,C,V,B,N,M - Zoom, Pan, Rectangle, Orbit, PushPull, Paint, Move
A,S,D,F,G,H,J,L - 2pt Arc, Scale, Dims, Offset, Group, Hide, Follow-Me, Line
Q,E,R,T,Y,U,I,O,P - Protractor, Eraser, Rotate, Tape M, Polygon, Explode, Circle, Shadows, Perspective toggle
Shift+G = Make component
I map some extensions, usually with Shift or Alt +… but also forget them
I have a few mapped to Shift+ that are particular useful when editing components. I map these to Shift, so I can invoke inference lock with Shift, and while holding Shift/lock down, I can toggle between these options while locked.
Shift + 1,2,3,4,5. - Hidden lines, Hide similar Comps, Hide rest of Model, Close Component, Toggle X-Ray
So, probably confusing, but, hope it’s what you are asking. I think Aaron mostly uses the defaults, and cruises along like a speed demon, so, whatever you prefer.