Meh, I would keep Liz. She's more than funny enough for me, and the hilarious lack of resemblance to Margaret is worth it.
Actually on that topic I wish we could have taken Margaret out of the Velvet room like we could Liz. I think that would be all kinds of not-quite but almost silliness. I am thinking of Yosuke and Kanji, Teddie fawning over her and the typical Narukami responses.
"Oh her? We're married."
"She's been following me around talking about social links."
"Her name's Margaret."
I know which of the three I would pick.