Fair enough. I'm purposely avoiding spoilers, so I haven't seen much of the art so I couldn't draw the same comparison. When I see that sort of thing elsewhere, I just try to chalk it up to that character wearing different clothes, accessories or hairstyles from time to time. When it's a more drastic physical or facial change, though, it's harder to explain it away.

It's already going to be a bit odd having Luna and Regis voices by different actors, but their in-game voices sound fine to me so I'm not bothered.