Well, you're at least halfway there with the butterfly keys, since their left and right arrow keys are full-sized and only the up and down keys are half-height!

Well, you're at least halfway there with the butterfly keys, since their left and right arrow keys are full-sized and only the up and down keys are half-height! Mac laptops previously have had half-height arrow keys literally for two decades, going back to 1998's PowerBook G3.