Yeah, I believe ideally, you'd use the right-hand modifiers when pressing keys on the left hand side, and vice versa. I think the asymmetric, row-staggered lay

Yeah, I believe ideally, you'd use the right-hand modifiers when pressing keys on the left hand side, and vice versa. I think the asymmetric, row-staggered layout that keyboards have discourages this. Though, a fancy technique many keyboard-enthusiasts will use is to have dual-use keys. e.g. Tap-Hold dual use. The key acts the same when tapped, but acts as a modifier key when held. e.g. changing Capslock key to escape when tapped, Ctrl when held is probably the easiest to think of. The best use of tap-hold is for Home-Row modifiers. Putting alt/command/ctrl/shift as modifiers of asdf (and symmetrically, jkl;).