This seems like a very fundamental request/layout. Of course in order for the unit to be user friendly, manufacturers should always be shown in alphabetical order, regardless of which region that has been chosen.
Also, there should be an option to add some manufacturers to a "Favorites" list for quick access.
I am surprised that this fine product with so many years history does not have this basic outline/feature.
If we think of it the other way, what thought process has taken place that has led to the conclusion that "let's arrange the manufacturers all mixed up"? Presentation of information should be a key project in such a tool/software/app.
How have you reached the current layout decision?
Regards,
Arash