great mod but it has one issue, the colonialism institution spawns way too late, making tech ridiculously expensive. Maybe colonialism could spawn earlier without the requirement to own a fully completed colony in the new world

@Pionier: Thanks for the feedback. I will look into changing the AI weighting.

That said, I'm not sure what you're describing is ahistorical. In 1550, Americas were barely settled. Only the Spanish controlled large portions of it, mostly by conquering the Incas and Aztecs (and their neighbors). In EU4 that's represented by events and conquering claims that missions give you, not so much by sending out colonists.

The AI often struggles with actually conquering those claims, but that's not something I'm confident I can fix, unfortunately.

I like the idea of this mod. Colonization seems to go too fast in most vanilla games compared to real life.
I tested this mod several times and the result is: It's overkill, to the point where the Americas are barley settled by 1550.
If you would make sure that European AI colonizers pick Exploration and Expansion as their 2nd and 3rd ideas, I think this mod would be closer to historical colonization.