It has been a long time I was working this keyboard layout. Now this is what it looks like.
Maybe I find some time to describe the features and reasoning soon. There are many layouts out there, but only one of visibility for the German language, the “neo” layout. The strange result of my experience is that every gain in accessibility has its price. If you have better positions for some letter combinations, others become more akward. However, it is hard to judge, when one is so much used to the normal layouts QWERTZ/QWERTY.