More blemishes, but some of them are the kind of things that, nowadays, we correct fairly easily (bowleggedness, for example). Or a kohen with an extra digit — which is not common, but not uncommon either, with a significant genetic component. Nowadays, they are easily removed. Or less changeable, perhaps, but also less identifiable as a blemish these days, like left-handedness. Plus, the question of how many bones are in the human body. Also, other “full-body” exemptions from being able to serve — blemishes, of a kind, such as drunkenness, among others — that disqualify a person from serving, but not an animal from being able to be the sacrifice. Including skin color and great height, with a side recommendation that like marry not-like. Plus, similar blemishes (including sins and crimes) that would disqualify an animal from being sacrificed if it were party to these (such as bestiality), but the person is not disqualified.