That said, I think that putting a display under the trackpad as well or instead would have a bigger payoff.
I have trouble with the pinky finger on my right hand. I should be using it to hit the "p" but... I dunno, it just doesn't happen that way. Sorry, Mavis Beacon, I tried.
I've got a handful of function keys memorized, but I frequently miss if I'm not looking down. I'd never try to Alt-F5 on Windows without looking.