How about "running" with twice pressing an arrow-key instead of holding one?
I would need this right now. I think it's less annoying than holding both hands on the keyboard.
EDIT:
And also, the down-looking part of my hero running looks like this:

I think, as creator of the blizz ABS, or someone who knows it very well, you'll understand my problem really fast.
When the hero run's against a wall or another object, which is blocking him, the first sprite of the running-character is shown.
So it looks like he is standing on his one foot and that looks... weird.