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There is a hypothesis that the number of different save files that can be generated from the same map, as well as the number of different skill builds for any hero of a given class, is equal to 255. Observations were made while attempting to generate a combination of Expert Logistics and Expert Marksman for Joseph (Price of Loyalty, campaign "Heirs", scenario 6). However, obtaining all possible save files is an incredibly difficult task, as there is a well-known cyclical pattern that can lead to a single, repeating save file. The cycle usually breaks if you hire any hero in the tavern before the next load. It took me a considerable amount of time to generate 50% of the different save files on this map, and approximately the same amount of time to generate the next 10%. In the end, I stopped at a variant where this combination is achieved after seven level-ups, discarding the option of starting with Expert Logistics, as the Expert Marksman would then be obtained too late.