I use Ctrl-f and Ctrl-b (as well as Ctrl-e and Ctrl-y) pretty often, and you're right that there are no shortcuts for it in the provided example. Perhaps I should look into those as possible next targets. I guess I'm not entirely eliminating the Ctrl key from my vim usage (not that there's anything wrong with Ctrl, really), but you have a point.

I'm guessing I use Ctrl-e more often than :e - perhaps I should change that up.

There seems to be a lot of ringing endorsements for CapsLock as Ctrl in the comments.