Yeah... Thanks for the reply after a week! But editing text files is simple, and the information from HoMM 6 is available in the manual and online. Even so, are you really not going to make this fix mod yourself instead of me?
The thing is, in Heroes V, they wanted to create a campaign featuring the Nagas, and Oleg Gryphon and Cyrus united against the Order of the Void, using Zakira for this purpose. And with this mod, you can now create a fan version of this campaign! But to understand the character, you can just watch this gameplay video: https://www.youtube.com/watch?v=2iLESZJKMJY.
In Heroes VI, the Shark Guards are stronger than the Kappas only in terms of health, but in terms of defense and other parameters, they are already better than the Kappas, so you can leave it as is. Maybe the Stream Spirits should be on level 5, and the Priestesses on level 3? And for the "four waves" of Kensei, I think Whirlwind is more similar than Storm, which only attacks twice, although the three attacks from the waves can be combined in strength into a second attack, and the Furious ones' desire to crush is more like Storm? And shouldn't the Kirin be able to fly? In Heroes VI, they followed air currents above the ground...
1) For me, there is nothing critically important in the points you described, but since you decide to change some moments yourself, I can, with your permission, add your changes to the mod that I uploaded.
2) I'm hearing about this campaign for the first time. If I'm still alive and well in ten years, then we can think about something like that.
3) Keep in mind that the race is already imbalanced compared to other races in the fifth part, so all such changes must be introduced carefully. Simply trying to "make it like in the sixth" is not reasonable. The way creatures look in the fifth part, which is conditional in the sixth, is a debatable issue. But, relative to the original size of the Kappas, for example (I already have a model transferred from the seventh, it is really small for the fifth), they clearly belong to the first tier, relative to the Sharks. I think we should either take away the water immunity from the Nagas, or add an aura of vulnerability to air from the elemental Gargoyles to all of them. And the Kirin need to have their speed reduced; they can now run around the battlefield from one end to the other even without any bonuses.
Added after 40 seconds
I wanted to replay the campaign, but when unpacking the archive, errors occur and the files are unpacked as 0kb.
Everything unpacks normally for me. Try using 7zip, which I used to pack the archive.
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