Much like with Stone cold, I think it works fine when he's talking. The problem with "What?" was the crowds bit into it too hard, an d then it was every single line of every single promo.
It's sorta like the massive booing thing. Works in small doses, and definitely worked as a one or two time thing to vilify New Day. But when you're genuinely expressing disgust, then all you are doing is dragging out the segment of someone you don't like.
But back to topic, I actually liked Oba's first post-win appearance. He seemed like he really had it together, and I bought the heat between him and the Don. But they are going to make me sit through a program with Eddy Thorpe, and I'm not sure that I'll ever forgive them for that.
And I hate to beat this dead horse, but if someone doesn't give Ava an acting lesson or a note on having an actual character, at least have the decency to not spam her throughout the episode. She should not be doing more on camera work. I swear, the manager's office is the worst part of NXT right now.