It feels like it should be so easy to do, but apparently making a mod from scratch requires a lot more understanding than just copying some resources and tweaking it like I'm used to. I want to make it on my own, but it's clear to me that it's going to take me probably a few weeks of reviewing the mod manual to finally understand what I'm doing, since I have indeed been trying but failing.

The basic idea that I was trying to accomplish is to make an Empire Upgrade -- free to all AI players yet can't be researched by human/irl players -- which gives all their heroes and leaders Quick Learning (but doesn't transfer over to you if you convert one of their heroes, or if a leader surrenders to you).

My reasoning for why this would be good is because all AI heroes and leaders end up being around half the level of my own leader/heroes throughout every game. Thus, they always feel so lackluster to fight, whereas I think it'd feel a lot better if they felt like true boss units.

I don't think there needs to be any icons nor descriptions added for this, because it just needs to apply Quick Learning for AI factions, and not an original spell/ability.

I will keep trying to accomplish it on my own, but I'm sure it will take me quite a while. At least I will have a much better understanding of making original resources if I can do it on my own eventually.