Also, all the non-MW interpretations say "and then choose a random outcome" without any clue as to how randomness might occur. MWI can propose an actual mechani

Also, all the non-MW interpretations say "and then choose a random outcome" without any clue as to how randomness might occur. MWI can propose an actual mechanism for randomness: sampling a space of alternatives, aka the Sleeping Beauty approach. To me this is pretty close to a knockdown argument in favour of MWI.