Btw I am not saying they should. Historically there is very little reason to do so. Gameplay wise as well, but it is nonsense to make alt-history regarding the Yuan and Spanish and deny the same for the rest of the world because reasons.
you seem to have completely misunderstood the point my post.
Making alt-history content for the tags, or about technology or whatelse.
It’s simply about the gameplay mechanics we currently know.
As a PLAYER, it is more efficient to use the resources in the Americas to conquer the rest of the old world than vice versa.
In 1337 if you start as the ottomans(who will 100% be nerfed btw) you first have to deal with your imediate threats. Maybe snaking to west africa will be a viable strategy but i doubt it because of control. By the time you reach the americas most games the Iberians will have colonized it.
The exact same thing applies to all other old world countries.
Yuan has the following advantages: diplo annexing through Mandate of Heaven IO, easy access to the Americas via Kamchatka -> Alaska -> rest of the Americas.
Conversely Castille has the advantages: Diplo Annexing the HRE and possibly rest of Europe. Easy access to the Americas + Conquistadors.
We’ve yet to see many of the different special units, and i doubt they’ll have that huge of an impact, but in the 16th century(when new world wealth can start being used to conquer the old world) the Tercios should probably be amongst the strongest units in the game.
Also of you’re going for a WC why would you waste time going from Yuan -> Ming when you can just stay as the Yuan???