I would like to change the OS X system language on one Mac from English to French. If I do that, all standard-shortcuts also change. We use the Dvorak keyboard layout on all Macs.
Example: In Preview, basically all shortcuts seem to by language-dependent. For example, View → Thumbnails which is ALT+CMD+1 will be something entirely different.
The fact that all shortcuts are changed as well makes the system almost unusable (efficiently), esp. if you got to change between different-language macs frequently.
How can I change the system language without changing shortcuts?