I've enjoyed a Vi-emulation keymapping that i made where the primary movement keys are on the home row:

https://github.com/bshanks/viperre

I also use the Colemak keyboard layout, so i made two versions of the mapping, one for QWERTY, one for Colemak. Which highlights the importance of text editors (and IDEs) needing to have completely configurable keybindings.