Quantum interpretations all generally predict the same stuff (or very close to the same stuff) that "normal" quantum mechanics does. If you have something which

Quantum interpretations all generally predict the same stuff (or very close to the same stuff) that "normal" quantum mechanics does. If you have something which has substantially different predictions then it isn't really an interpretation, its a whole different theory. The problems between general relativity and quantum mechanics are not at this subtle interpretational layer. They're actual calculations you do, predictions you make, where the results you get make no sense. In any case if the nonlocality of quantum mechanics was the problem then we should see issues already when trying to connect special relativity with quantum theory, and that seems to work pretty well (e.g. quantum electrodynamics seems fairly legit).