NHF – new heroes for Heroes V 3.1.

Guys, just in case the mod continues to develop, I decided to share some ideas for heroes that I've accumulated while playing the mod:
Sylvan:
•With each level up, the probability that the next week will be a Sylvan creature week increases (the formula is approximately such that the probability is ~50% at level 12, ~75% at level 20).
Dungeon:
•Each time the hero gains a level that is a multiple of 4 (4, 8, 12...), he receives one extra skill point (i.e., he levels up twice, as if he gained 2 levels at once).
Academy:
•The hero receives +1 to Knowledge at the start of the game and +1 for every 3 levels. The bonus works if the hero was in the Academy city no later than 2 days ago.
•The hero receives a third slot for a ring or, if this cannot be done, receives a bonus from the ring that is first in the inventory of unused artifacts. In addition, at the beginning, the hero receives a ring of lightning protection.
Fortress:
•The hero receives +1 to Attack, Defense, Magic, and Knowledge if his army has at least 1 creature of each level of the Fortress. For every 10 levels of the hero, the bonus increases by +1.
Stronghold:
•Each time a city is captured, a small garrison of creatures of the faction that owns the city appears in it. The number of creatures depends on the level of the city.