War machines in Heroes V.

In Heroes V, the "War Machines" skill is not a priority; moreover, it is rarely developed, with players preferring to focus on skills like Luck, Attack, Defense, Magic, etc. This skill is essentially weak compared to others.
Question: Is it possible to enhance it in a way that would make it interesting to develop?

Specifically (as an example):

Basic War Machine Control: basic + 1 unit of health to all units, + 1 unit of attack, + 1% to initiative
Advanced War Machine Control: basic + 2 units of health to all units, + 1 unit of attack, + 1 unit of defense, + 2% to initiative
Expert War Machine Control: basic + 4 units of health, + 1 unit of attack, + 1 unit of defense, + 4% to initiative

The numbers can be different. I just provided an example. I would like to hear your opinion. Suggest your own options.
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