On the topic:
1) Haven. - Slightly increase the defense or hit points of the griffins (+2 hit points). And that's it. Leave the archers alone.
At the same time, there are significant imbalances. Which everyone or most people agree on. These should be fixed first (based on the stated goal).
Nargott, please calm down, I really didn't mean to offend you, it's just that, even from the outside, it's clear that you are advertising your mod in the thread of someone else's mod, Unit. This is, at the very least, somewhat inappropriate. Aren't you ashamed to act like this?
Specifically on the topic, I have already said. See the list of problematic areas (main imbalances) above. I will not say how to fix them, otherwise they will again consider it intrusive.