Morrow has always been kind of bad at the Mad Scientist gig. He just lacks the commitment to evil. His colleagues have been known to comment disparagingly about it.
Though my favorite thing about Morrow being there, even beyond the tissues (admittedly incredibly awesome, particularly Diana's response), was that Tresser is all "whut no" when he sees him and Diana's like "down boy" and Tresser goes "yes'm" and closes the subject. If he keeps acting like this I might actually have to start liking him. (He still wouldn't necessarily be suited to Diana, but he would at least be someone I enjoy seeing around.)
I hope Wacky Alky doesn't get overused - new character burnout is a real problem in comics and perhaps especially in the Wondy mythos (coughDevastationcough) - but I am interested to see how she plays into this. It's very late in the storyline to be tossing yet another ball into the air, but Gail did similar in "Hypothetical Woman" and pulled it off, and Wacky Alky is fun, so I'm on board.