Contrary to uninformed popular opinion, Universal has no rights to any character that is not already in IOA, so any character that has no presence in IOA is fair game for Disney to use in Florida as long as they are not called Marvel.
And since it is technically related, Universal can no longer build new Marvel attractions, they no longer have that right to. If they did, they could easily put up something quickly related to GOTG but they can't. The contract clearly states this and has been discussed in great legal detail elsewhere online by credentialed lawyers.
Believe what you will.