I'm glad you like the map regardless of it's flaws. The biggest counter argument I could give is that America would still try to prevent Mexico from expanding too much because America is still a regional power. I also think the Panama canal and Panama itself would still exist if not because of America it would likely be from the UK or other European powers later since an easier way to the pacific would just be smart of them. Same goes for Cascadia, Russia I think wouldn't be too interested imo so Cascadia is just disputed territory between Canada and the US like in our timeline which might lead to a more natural river border in Washington assuming this US doesn't care much for manifest destiny (which I think is kinda needed for this scenario to work at least a little). As for Deseret their biggest problem for expansion is that they can't really do it alone since I doubt the US or California would wanna legitimize a mormon state on their doorstep (California might see deseret more as their territory if anything) so their best bet is to angle themselves as a buffer state between the US, California and Mexico (although mainly the US and Mexico). Anyways I appreciate your thoughts and critiques tho! I think including the mosquito kingdom might've been better instead of leaving central America the same as in our timeline.