I dont think that Navarra should even be considered as a Spain contender. They are Basques.
LOL. And Aragon are Catalans.
Spain wasn't a cultural concept, but a geographical one (Hispania/Iberia)
I believe Navarre should be a Spain contender.
You're right. And also Portugal
. I think they should only get CBs on other territories when the acquisition becomes imminent (Aragon, Navarre, Granada, and Portugal).
Castile must have CB's on Granada and Gibraltar [it was part of Castile's Reconquista territory (Velencia being Aragon's)]