I'd really not like to see Ap renamed to integrity or something like that.
Things like growing a total of 12 eyes don't affect your integrity, they make you damn ugly. Orcs are ugly, wearing a blood-stained robe is ugly, wearing a nice cloak makes you more beautiful, etc. And if in Ancardia beauty is related to some mystical grace permeating beings, and this makes it harder for corruption to penetrate, it's fine by me. It ties into many fantasy and mythology tropes in fact.
If we really want to be politically correct and not say being ugly is a bad thing, the attribute could be renamed to "beauty". Then each player can interpret that as "outer beauty" or "inner beauty", or a mix of both, depending on how they want to roleplay and to imagine the way Chaos works. But I think changing it to deeper concepts like integrity, purity, etc. is really not needed. It's a fantasy game, not a children's educational book!