I don't want to participate in arguments, but... What does it mean to "take the AI"? It sounds paradoxical; it's unlikely that the AI in Heroes of Might and Magic III is a universal library that can be plugged in and adapted anywhere, like some DeepMind.
I fully support the creation of any guides and other content. I don't know how much time Heroes of Might and Magic V has left, but the fact that its lifespan is extended against all expectations is a fact. The fifth installment has been alive, albeit with varying success, for 14 years, which is twice as long as the time that passed from the creation of the third game to the creation of the fifth, but that's a fact...