I like to create an optimized keyboard layout for the german language.
I currently use the ADNW variant for split keyboards with space on thumbs on my TECK.
Link to this layout (only German):
I have to see what will go on the different layers.
On my TECK I had used a key to switch back to a standard QWERTZ layout as a fallback.
The layout will be open source so anyone interested can use it and modify it.
Best regards from Germany