It is forbidden to build a Converter both on the Portal and on HotA.

Isra and Vidomina are terrible heroes because they only start recruiting skeletons that are as numerous as any other Necromancer with Expert Necromancy after level 10, but in the first 1-2 weeks, the battle is against numerous but weak units, and you need to immediately recruit 30% skeletons, not 21%. And considering the tactics of playing against Necromancer (rush), Isra's or Vidomina's specialization simply won't have time to pay off; it's better to use Clavius or Tamika.

1 peasant hideout is far from being a stroke of luck; it is much more useful to have 2-3 secondary hideouts and a strong hideout of level 1 from the first week + so that the heroes in the tavern appear either with Goblins or with Trolls, and specialists of rank 1 with 3 stacks are also worth their weight in gold (Shakti, Grechin, Ignatius, Dragon).

With half of the described advantages, the rate is at least 250 skeletons per week. On HotA, if you can take Galthran at the start, the prospects are always good, but according to the Portal rules, the Necromancer is less stable...