Why I am highly critical of Nature (and to somewhat lesser degree of Science) I do believe the review process needs much more transparency. I am not yet convinced that making reviews public will make much difference to the better, however saying it will corrupt the review process is completely missing how broken the process is right now, in particular for these high-impact journals. Some copernicus journals [1] (I have no association, never even published there) seem to follow some interesting ideas.
I don't think it's that broken in nuclear physics. sure there are bad reviewers, but it's on the editors to sort that out. But opening the door to "that reviewer reviewed us favorably, so we have to do the same" is not good.
[1] https://publications.copernicus.org/open-access_journals/jou...