Honestly, we chose the SDFJKL scheme because it’s a common 6-button scheme that works well, doesn’t require a numpad, and on many keyboards has nubs on the F and J keys. A scheme like ASDFGH was not considered though because of the way it would put both of your hands on the same side of the keyboard (uncomfortable, in my opinion). Rebindable controls would go a long way though…
Thanks for the wall of feedback!