BTW A multiple switches keyboard is not a novelty, other than topre, some one else has already managed to try this approach (better approach at least for typing)
That is an example of literally a person creating a custom board. That is far more custom than what the other guy was suggesting.
Since I don't always hit keys with the same fingers, nor the ones that you're supposed to use, variable weighting like that would just be a giant problem rather than any kind of help. I know I'm not the only one who doesn't do it 100% like you're supposed to.
