I really truly love this show. I love the apex-Parks & Rec style of heart without schmaltz, and how even the characters played just for laughs are allowed to be real people. I even found myself being moved occasionally--the "Do I lie?" moment with Bobby Moynihan was weirdly compelling. Everybody commits. And, while I in no way want to get burned out on him, can Keegan-Michael Key be in everything?
I was going to watch this even if it was middling, out of support for St. Clair and Parham (as an old podcast whore, it's fun to hear little throwaways like "moveon.org"), but it's really become a delightful, funny, warm show. Bums me out that it will probably fade away from neglect, while lesser shows sit on life support on network tv.
Yeah, they have great chemistry, but I think they work best with that love/hate thing creating the tension without actually pursuing it. It would really skew Mark as a character if he suddenly became someone who would cheat. Leave him as a foil, bring in occasional love interests to keep things interesting for the leads and then get rid of them before they settle. The only OTP on the show is Maggie and Emma, and that needs to continue to be the center on which it spins.