From a kayfabe perspective nothing she's done recently stands out as "beatdown" worthy, I mean ultimately Miz gets beat down like he's Brooklyn Brawler every night anyway, so its not like anything Maryse is getting to do actually accomplishes anything. I want 2016 Miz and Maryse back, when Miz was a credible heel who used his wife to help win. Rather than 2017 Miz who's a joke and cant win anything even when he cheats his ass off.
She's added so much to The Miz character, and he'll be the first to tell you she's motivated him to do his absolute best every night.
The no man on woman violence works well as a heat tool as well, because generally Maryse can be all smug and get in the babyfaces faces.