Since the interpretation of quantum physics requires the introduction of a conscious observer, we can't avoid the question where physics stops and mind starts. I argue that the role of physics is to describe the structure of the Metaverse, with its continuum of virtual possibilities. The mind on the other hand can only dwell in a small subset of classical valleys between the hills of quantum fluctuations. That's why any conscious observer can only perceive quantum effects through their classical outcomes. We can't see the electron going through both slots at the same time, but we can see the interference pattern it creates.
Time as described by physics is nothing more than a parameter associated with one of the dimensions of space-time. Physics does not support our subjective perception of time as a continuous flow from the past to the future. In fact the naive representation of this flow in the space-time continuum would require the introduction of another external time in which this flow would take place.
Since in physics we are not allowed to introduce superfluous concepts, we have to conclude that the flow of time is a creation of our mind. After all, the only "proof" that the time flows is in our minds—we remember the past and anticipate the future. Our memories are neatly organized into a timeline. We can even remember having correctly predicted the outcomes of some experiments; therefore we are confident that our current predictions have a good chance of being fulfilled in the future. We have to realize, however, that these perceptions are perfectly consistent with the many-pasts, many-futures picture of the Metaverse.
Is there any practical application of the Metaverse interpretation of quantum physics? At present, there isn't. Remember, the math is still the same. However, it is possible that by abandoning the "epicycles" of the Copenhagen interpretation, physicists might be able to formulate more general theories; theories that will explain the effects of QFT just like Newton's gravity explained the way planets revolve around the Sun.
Would we make different choices in our lives if we believed in the Metaverse? I don't think so. We might however reconsider our notion of "luck" in view of the micro-anthropic principle. If you are a survivor of a dozen automobile accidents, you are tempted to think of yourself as either incredibly lucky or miraculously protected by providence. Don't! There might be incredibly more life histories in which you didn't survive. You'll never know, because you are not there.