WieWaldi If your eyes locked on sheet music, your fingers must be able to rely on equal distances between the keys.
You know, it always amazes me how fast the brain adjusts though. The other day I played a friend's piano. Hers is probably close to a century old and used to teach, so probably got banged around a lot. Our Clavinova has super heavy action and hers is feather light, so she probably thought I was trying to hammer a nail in! But my point is, it took me 30 seconds to make mental adjustments to lighten my touch and sound "normal".
Same with my kitty keyboard - any time I play it, the first 3 seconds I will hit the wrong note, but then again my brain adjusts to the smaller keys. I'm not dismissing what you said 🙂 I'm just saying that it's probably a little less of a problem that it seems at first. For non-serious playing around I might add 😃
I still want another keyboard too... a little more serious one that is. The kitty keyboard is adorable but it can only sound two notes at once - quite useless for anything but a few meow meows!