There is no real point in strengthening it. The mod was created mainly to increase the variety in the game. Berserker can defeat anyone if equipped with Sandro's Cloak... And you can't raise too many undead... I mean, in battle (Well, I lied... but I can still reduce their numbers). On the map, "The cost of raising creatures with necromancy is doubled" starting from version 1.4. Starting from version 1.7, the Temple of the Underworld has been weakened. Now it cannot be built without the Tear. Accordingly, this is also a significant blow to the number of undead.

And don't complain about the lack of balance; it's nervously smoking a hookah somewhere with the mages.