NHF – new heroes for Heroes V 3.1.

Currently, Istar, Saef, Ula, and Faydaen are at the bottom of the list.
Does anyone have any thoughts on them?

I haven't played in a while, but in my opinion:
1) Saef definitely shouldn't be touched; he's a pretty strong hero. At the very least, it's not difficult to take the 2nd guild on any map, and +4 to magic skills by the end of the second week is definitely not something that makes him an underdog.
2) As for Ula, she's also a good hero. Luck of the Path is a definite plus on Veteran/Hero difficulty, her starting spell is strong, her special ability is good for breaking through defenses, and she's always ready for an unexpected battle with an opponent in terms of mana, and she plays well through Chaos.
3) I've never played as Istar, only tested his special ability, so it's hard to say anything for or against him. I need to try him out in practice; maybe the mana cost for summoning the druid or the initial skills/spells could be slightly adjusted.
4) Faydaen is weak in battles with opponents; his special ability is still somewhat useful for breaking through defenses, but I don't know if it's possible to edit his stats in the game files. As far as I remember, his special ability is hardcoded into the executable, which is bad.