Small changes to the Skillwheel mod by Azard, taken from this topic. Borrowed solution for "skill probability" from vova2112 from this topic.
Initially, I planned for more changes (without affecting the core), but it turned out that after implementing them, the game incorrectly displayed what was intended and simply crashed. I had to abandon the idea of a single button for all Factions on the level-up box (the first screenshot shows the level-up). Then, I had to abandon the idea of adding a separate "skill probability" for each Faction on the same level-up box. Perhaps I will add something in the future.
Changes related to the main mod can be seen in the screenshots below, or you can download the original mod and compare.
It will be necessary to test it in the game!

---------------------------------------------
Неудачное планирование ведёт к неудаче ...
NCF - мод, добавляющий дополнительных существ в HeroesV 3.1