How do you handle different variant of a process model for different areas of your company?

Different areas in terms of regions, countries or business units.
Especially if you are in big size company you might have the need for adaption of a standardized process to different needs.

Options to my knowledge so far:

the view creation feature (limited functionality e.g. when skipping 2 steps in sequence),
duplication of the process (not great due to double data handling),
building variants with gateways (not great for complex processes)