The wall controls were always much better when installed off to the side. My former neighbor Thelma had a built-in cooktop with such controls, and never seemed to have any problem with them, though she was about 5'6.
Another neighbor has had a Mark 27 since 1972 (on her second now), and she does quite a bit of cooking; more oven than top. She did have the old gas range in the basement that she used for canning, but got rid of it several years ago, so has used the GE for canning since.
I've always like these, but think they look better with an oven window.