I have. Fired up the terminal and started Vim. 5 minutes later I was convinced that my next computer will probably come with Windows. Really sad, too. I don't have to blow away the OS to get a decent experience on a Mac.
no <Right> $
no <Left> ^
no <Up> <C-U>
no <Down> <C-D>
That should be enough to help newbies to stop using the arrow keys and put their right hands on hjkl as the Gods intended. ino kj <Esc>
Then type kj each time you need to exit insert mode instead of escape. You'll love it. It's much better for your hands.