If you don't need the physical keys to change (and well, a keycap puller and maybe spare keys would fix that), you could get a remappable mechanical keyboard.

I've got an oldschool razer blackwidow - now sold as the blackwidow classic but many keyboards of this sort would have similar features.

• has proper switches.
• cause of this, you can just pull and move most keys around
• you can buy replacement keycaps, even as a set.
• backlight optional, there's models without it.
• You won't be a membrane key using plebian.
• You can disable, enable and remap keys to your heart's content
• You arn't spending several thousand dollars for reconfiguring a keyboard. My key puller cost three dollars.

If you don't need the physical keys to change (and well, a keycap puller and maybe spare keys would fix that), you could get a remappable mechanical keyboard.

I've got an old school Razer BlackWidow - now sold as the BlackWidow Classic, but many keyboards of this sort would have similar features.

• Has proper switches.
• Because of this, you can just pull and move most keys around
• You can buy replacement keycaps, even as a set.
• Backlight optional, there's models without it.
• You won't be a membrane-key-using plebeian.
• You can disable, enable and remap keys to your heart's content
• You aren't spending several thousand dollars for reconfiguring a keyboard. My key puller costs three dollars.