Harmony - Troop Symmetry

It is quite possible that I will remove the Necrolizer from Necropolis (this is also a significant buff for an already overpowered undead faction – overpowered, at least because the entire army is immune to mind magic and some other spells).

The "blessing" for the undead should be banned (as it was in all earlier parts of Heroes).
Regarding the Necrolizer, if possible, leave it with the function of transforming units into skeletons (or all types of units... meaning levels 1-7... or only the first level), rather than removing it completely.

Can the "Recruitment" skill be made functional not only when the hero is in a town?

Added 9 minutes later
P.S.

because the army had to include living units,

perhaps only for some Campaign... a single case.
But otherwise... taking a Necromancer to play with living units... that's rough :D
Neither a class skill nor morale, even with "Leadership".

» Squads consisting of 3 allied races: -1 Morale;
» Squads consisting of 2 enemy races: -1 Morale;
» All other combinations: -2 Morale.

...and also based on the relationship of the squad with the hero:
» 0 if the hero is of an allied race;
» -2 if the hero is of an enemy race

...in general, the "Empathy" skill will definitely be useful:D