I think the problem might be sound, because the spacebar (and pcb) would be right on top of solid material and the sound can escape to the front. I guess it’ll sound very flat and no one wants to spend 300 bucks on a bad sounding spacebar.
I built it in the german layout i’m used to because i went all in on Art Nouveau (hope i spelled that right). Including the novelty, this is base- and 4 childkits 🫥