I also prefer separate drivers, because for the BIOS selection you have to use the Tab menu (which is more complicated) and you also have to know that such a different ROM version exists at all.

Edit: OTOH it would be a huge work to change this for the existing devices, because there are a lot of engines with different versions defined in the BIOS. For my package it even would be still more work, because I'd not only have to change these engines in MessExtra but also all corresponding references to them in CB-Emu itself. So I'm not sure if I would really do this, if you decide to make these changes in MAME.

BTW, I don't think a German translation is necessary, I'm quite sure that everyone here understands English as well.

Franz