Heroes 5.5 WarGame Edition - Tactical Edition.

There's a situation like this:
Vampirism is a special spell, only granted for the "Dark Seal" skill.
Revenge is a special spell, only granted for the "Light Seal" skill.
Holy Word, Death Wave are level 5 spells (can be learned in the guild).

Is it worth making the following changes:
1) Vampirism to level 4, Berserk to level 5, Death Wave - a special spell, only granted for the "Dark Seal" skill.
2) Revenge to level 5, Holy Word - a special spell, only granted for the "Light Seal" skill.

The point is: Wave and Word are situational spells that may not perform well, while taking up an important slot in the mage guild. For example, getting Death Wave in the guild at level 5 while playing as Dark Elves (it will hit your own units) or against Demons (it doesn't work), instead of the important Subjugation. Another example, getting Holy Word in the guild at level 5 against Humans, Mages, Elves, Dwarves, or Dark Elves (it doesn't work), instead of the important Resurrection.