Good catch. Alignment is not the same as personality though. There could be an evil character who would be all laughs and smiles and then stab you in the back.
You would need alignment restricted personality tags for correct reactions. Such as sadistic or deceptive for evil characters who either enjoy other people's suffering or fake "good" reactions. Empathic or stern for good alignment who could either feel your pain or harden up in a call for justice. Stoic, sarcastic or indifferent for neutrals. Etc. etc. I think they could actually be narrowed down to a few but meaningful choices.
Would be a great system. Doesn't Solasta do something like this? At least they have tags, not sure how they affect the gameplay.
