"HW rulez" mod (add-on) for HoMM3.

Or are you completely against such changes, and nothing should be done? Should some factions remain weaker and others stronger?

Exactly. And in general, I would remove half of the restrictions from the rules. Vic, as I recall, quite accurately described the real overpowered strategies in the game; if I'm not mistaken, they included Necropolis builds, Diplomacy, 4 damage dealers, and stealing control from under fortified units, as well as hit-and-run tactics. Everything else doesn't have such a big impact on the game and could quite easily be allowed. For example, Mullich and specialists of level 4 were unbanned; did anyone suffer as a result? No one did; it just means there are fewer rules to remember. Are they better than Gunnar, Kirr, or Crag? That's a rhetorical question. In my opinion, it would be possible to allow Fae, Mages, and Vampires. And Isru and Vidomina, but only prohibit them from being chosen as starting heroes, like Gosh. At least they finally removed the Red Rush strategy. Also, remove Cartographers and Forts from the map. And allow the Grail, in all castles. And all these 2-level buildings and 3 stacks at the start are just catering to the small, heroic weaknesses of people who want a relaxed game, where everything goes smoothly and the game is under complete control. This is the same as the absence of morale, global skills, experience for troops, overpowered scouting, replacing scrolls with gold, etc., in the World Tree expansion. And as a result, you get those very "knife-throwers" that were mentioned above, who need the sun to shine at the right angle, the knife to be of the correct weight to the gram, and the wind to blow exclusively in their favor, and not in their face, in order to hit their target. And if this player suddenly finds themselves in a normal environment after this castrated experience, they immediately panic and start swearing, saying that the damn SOD is to blame, that he placed obelisks near the castle, and now they will lose 5 more marks and won't be able to take that max-cons with a level 121 hero, as they are used to. And if the morale of a stack of Gremlins is also low, then the chair will burn out in an instant. I'm exaggerating here, of course, but I hope the point is clear. I wouldn't want the younger generations of players to repeat the mistakes that the former top players made.