MMH5.5 - Heroes of Might and Magic 5.5

With the new structure melee heroes that have combat always pick the middle perk "Martial arts" which increases average damage by 50%.

And this is actually a bad thing, as it reduces variety.
If one branch has 200% damage, another has 50% stun (the numbers are arbitrary, it might be a lot, but enough so it's not weak), and a third has 300% retaliation, and they are incompatible, then they will all work well, but under different conditions.
Although I understand the author's concept, like "the middle skills of level 1 are always taken, and that's normal." But the variety is still less than without it.

What skill is 'подмога' ?

Barbarian Mark from the racial skill (translated as "support" in Russian).

The new concept actually fixes a core issue in ToTe which is - might & magic heroes do the same amount of melee damage.

Yes, but was it really worth fixing, if magic heroes normally don't engage in melee combat, but cast spells, which is what they specialize in? That is, the fact that they formally have the same attack power doesn't really matter, because in reality they don't use it, or use it much less often (and without skills that enhance it, there aren't only damage-related skills).

Retaliation strike is very situational skill because its damage depends on the opponent maneuvers so it does not mean if it deals 1 damage or 99999999999999 if it will be never triggered. Also when it does trigger triple damage is way too much anyway, especially in PvE.

That's true, but triple retaliation is a situationally powerful and interesting skill that you want to try, and it's interesting to experiment with. And what has replaced it now? Pathetic +1/+1, a skill that's "nothing special, just parameters, and not many of them, and they're vague" (the bonus is split between attack and defense).

I wouldn't criticize or insist on this, but in reality, it's a pity to see that a few versions ago, this same mod had good and beautiful features that were eventually abandoned, and was it worth it? You don't need to trust my opinion specifically - I would advise you to conduct a survey among the active players of your project, and whether they really prefer the situation with +1/+1 instead of triple retaliation?

Also when it does trigger triple damage is way too much anyway, especially in PvE.

If there are other interesting alternatives, such as 50% stun (instead of 20%), or 200% damage to all hero attacks, then it's not a given that I will focus on retaliation. But the power of the skill in PvE will certainly increase. After all, it was conceived as a key skill for Might? An "analogue" of magic?

I suggested the numbers 50% stun and 200% damage as an example, in the context of returning triple retaliation, as competing skills, you should not evaluate these ideas separately without returning triple retaliation.

Added after 22 minutes

I cannot translate the question very well so I will just say how logistics works.

all type of terrains have 25% penalty for everyone except grass.
To compensate this all roads on all terrains except grass have 0% penalty.

The question was whether it is technically possible to set a 0% penalty for all types of terrain, or whether 25% is a necessary measure? (if we forget about the Pathfinding skill).
This is not a suggestion to do so, but rather a technical question (are there any bugs that prevent this).

As for the suggestion, I would advise you to think about whether it is really so important to compensate for roads, at the expense of the overall logic and convenience (standard roads)?