In principle rQM could suggest a different mental picture, and one better capable of inspiring further models that will make successful predictions. (Assuming shminux's bizarre positivist-like approach admits the existence of mental pictures.) The "better capable" part seems unlikely to this layman. Feynman's path integrals have a very MWI-like feel to me, and Feynman himself shared that impression when he wrote the book with Hibbs. But since paths that go back in time seem to pose a problem for Eliezer's causality-based approach, perhaps shminux has some reason for preferring rQM that I don't see. I'm still betting against it.

Feel free to quote the statement that led you to such a strange conclusion.