I don't know where you wrote this, but I'm interested in something else: is it also possible to increase the number of hero classes, skills, abilities, spells, artifacts, creature abilities, towns, and factions? And if so, where is the principle of operation described, for example, for abilities?
Added 3 minutes later
The same goes for additional lines in the menu with factions.
However, the problem is that not everything you're looking for may be in the executable file.
И пусть Эльрат осветит твой путь