unprincipled peter
Donor
well, the rules also state that you can POD whenever you want. a Spanish Mexico POD early enough, automatically has to break the rules of US has to exist pretty much as is, because, for starters, the US isn't going to be able to take Texas/AZ/Colorado/California/etc. Plus, any early POD means factors will alter the way the US develops (such as siphoning off immigrants, or simply denying the US a market). for example, if Russia modernizes early, WW1 is over in a year, and the US doesn't get to become the worlds financier. IF Canada or New Spain modernize early enough, they're going to be strong powers and the US isn't going to automatically be the dominant power in the Americas.
John7755: what do you mean New Spain has to somehow acquire LA? they did acquire it OTL. (edit- plus, they claimed all of it, and most of the south, and the entire west coast, including Alaska, before they acquired LA, so if they're stronger earlier, they could make good their claims).
As for how to populate and control it, remember that the part that makes any of the great production is to revamp things "like less instability/more plausible expansion/better infrastructure/ educated and greater population ". this automatically enables New Spain to populate and control, whether remaining part of the Spanish Empire or not. And really, if you dream up a way to keep the Spanish Empire intact with such things, it can easily swamp the US of OTL.
John7755: what do you mean New Spain has to somehow acquire LA? they did acquire it OTL. (edit- plus, they claimed all of it, and most of the south, and the entire west coast, including Alaska, before they acquired LA, so if they're stronger earlier, they could make good their claims).
As for how to populate and control it, remember that the part that makes any of the great production is to revamp things "like less instability/more plausible expansion/better infrastructure/ educated and greater population ". this automatically enables New Spain to populate and control, whether remaining part of the Spanish Empire or not. And really, if you dream up a way to keep the Spanish Empire intact with such things, it can easily swamp the US of OTL.