The Miz is everything wrong with how a character should look in the WWE.
He took a unique style and attire when he first broke into WWE and turned himself into another nasty trunk monkey. I cannot understand why guys want to wear everything else except pants. They'll wear a jacket, a shirt to sell merch, boots, extra props, you name it but most of them are reluctant to wear pants.
At least Christian did, and on top of that, is a great wrestler.
Your mention of pants reminds me: I hate when wrestlers who don't wrestle on the card don't wear street clothes. Every wrestler has a style, and that style goes beyond just what they wear in the ring. But, like, if you show up to the arena and don't wrestle, what are you walking around in boots and knee pads for?
(I do realize that dark matches are the reason for this. But I would wager that 90% of the time, segments where a guy should be in street clothes happen early enough in the broadcast that the wrestler could change in time for the dark match.)