I would love to see a split or ergonomic board with electrocapacitive rubber dome switches. I can't go back to the way mechanical feels, but would appreciate some ergonomics.

I have a Corne with purple Kailh Chocs for traveling, technically mechanical but they’re scissor switches so it feels like typing on a laptop if that’s the kind of experience you’re looking for

Not sure I understand correctly. Are you referring to membrane keyboards (rubber dome keyboards)? Why do you prefer these over mechanical keyboards?

My board of 3 years now has Topre clones and they feel vastly smoother than mechanical keys

This is nice but the aspect ratio is skewed on a lot of the photos that I looked. Again just a heads-up.