In principle, the initial neutral creatures could be made weaker, as mentioned above, and the ones in the dwarf castles could be made stronger.
Overall, the map is interesting, but maybe there could be a hero imprisoned for variety, some dwarf willing to "cooperate with the investigation." Otherwise, by the time I reach the "limit," I have a lot of resources, gold, 3 dwarf towns, and 1 human town, but there's no incentive to develop the dwarf towns further.