As far as Jean, if she's not showing emotion, why make jokes? Why cry? Why get frustrated? Why take someone's hand and say nice things to them? Why turn away from someone in disgust? Why hug someone? Why lie in bed not touching your husband but telekinetically picking up a condom along with the item you wanted? Why get furious at an extra-marital affair and then cure the woman sharing thoughts of sex with your husband and bring her back to life?
He left Jean Grey having resurrected her, what, three times in six issues? Establishing thus that she can come back whenever a writer wants her to. And, having her save the world, not once in Here Comes Tomorrow, but at least on two separate occasions.