Seems a little strange to concentrate so much on keyboard layouts rather than switching to a split or ergonomic keyboard....
I used to use a split keyboard but now I just stick with Apple's flat keyboards. I don't buy it anymore that they're more ergonomic. The "extra rest space" on my MS split keyboard I've actually found to be detrimental for me. Besides, people also use laptops and may not want to swap their keyboard.
> Besides, people also use laptops and may not want to swap their keyboard.
Laptops are not ergonomic, and nobody who knows the facts will use them for long periods for precisely that reason. However, you can make them less damaging to your health by putting the laptop on a riser and using an external keyboard.