Heroes of Might & Magic III: Horn of the Abyss

a relevant question...

in Heroes of Might and Magic, skills weren't reworked.

well, Heroes isn't really relevant here... we could have reworked them and created new ones – even a hundred, it wouldn't be difficult. But the problem isn't that: adding new skills in itself creates a complete imbalance (it changes the percentage ratio of the overall appearance of each skill, which will lead to such significant changes that it's hard to even imagine, and moreover, it will also cause problems with old maps that weren't designed for an increased number of skills). The only exception in this case is the idea that will be implemented in HotA 2.0:
namely, each race will have a kind of analogue of Necromancy (Sorcery in one of the translations).
This way, we kill two birds with one stone :) :
1. On the one hand, new skills aren't added, but only replace one of the standard ones (Necromancy) for specific races. (well, for Necromancers in the game, nothing changes)
2. On the other hand, they are essentially new, and they are added – even if with limitations – each skill for a specific faction.

as they say, everyone gets what they want ;)