I checked out the pilot because of some negative reviews I read, so that's my frame of reference:
"Marry Me" is a decent romcom based on the marriage of 30-something sitcom actress Casey Wilson and show runner David Kapse (whose previous outing, "Happy Endings", served as Wilson's breakout).
I don't have a strong familiarity with the romcom genre (or more specifically, romantic comedies in the past 15 years) which might work to my advantage as I thought this show was pretty good and possibly a better use of the "Happy Endings" creator's unique voice. Personally, I found "Happy Endings" was a little too insular and reliant on inside jokes that felt overconfident on character tics alone as punchlines. In that sense, "Marry Me" is a fresh start although there's a foreboding that the married couple (Gil and Dennah) are going to turn into an overrated source of comic relief. Gil (part of this fall season's trend of bearded schlubs) is already somewhat grating and raises questions about how he got his attractive wife in the first place.
What most impresses me however is the chemistry between the leads. Casey Wilson and Ken Marino are two people that are deserving as starring vehicles and anything that employs underrated character actors Dan Bucatinsky and Tim Meadows gets points in my book.
The pilot episode makes it clear that the show already has a strong grasp of it's comic tone. The plot of the failed marriage proposals was good long-form comedy that played out quite well.