Talking viewerships, he tends to not draw as much as he should in the main event anyway. Not sure on his mic segments, probably do. I blame booking though. There's no doubt he was the biggest draw with Cena in the summer, god knows how many times I see "I started watching again because of Punk".
But yeah his merch is doing insanely well. And I agree, I'm hoping they're just in the middle of designing one, or they'll reveal it after Wrestlemania perhaps.