Perhaps it could be included as a optional rule similar to the suggestion for Ambushes and Flank Marches. So you would have the main Pacto version of MeG remaining simplified but with options to include rules have been excluded, such as infantry fallbacks. New players would have a version of Pacto as an entry level to MeG and more experienced players could add optional rules if they wanted. It saves individually 'house ruling' parts players want to add back in.
