I have climbed in Mugen’s for years and found them to be a great all around shoe. These shoes are great - overall the same lines and fit as before, but some minimal changes to the toe box rubber. In the past, the edging rubber on the toes was much more pronounced (thicker layer) - the profile on these shoes is more modest (thinner layer), but still looks to be fully functional, but perhaps without the potential for catching the edge (which very rarely occurred with my older shoes).
This review was written in the old system and had content requirements that are different than reviews written today.