First remove all vestige of “civil law” from the legal system. Then PR can succeed as either a State or independently. And, of course, if it wants to be a state it will have to quit conducting it’s courts in Spanish LOL!
This is basic, fundamental.
I agree that having “insular” areas is a strain on the Constitution.
Civil law is the cornerstone of Louisiana’s legal system. Puerto Rico is not unique and the systems are not incompatible.