Pilo wave theories or objective collapse theories, i think that they're ultimately ill defined. They always help themselves to some pre existing classical notion of location and space which won't be appropriate once you quantize gravity. But i would love to be able to find experimental differences between many worlds and objective collapse theories. People are looking for evidence of objective collapses but haven't found any yet. Eventually, hopely, th they will be able to rule out all the promising models for pilot wave theories. And paltor as can sketch an outline of how everreadying quanta mechanics leads to each branch having its own space timeie.