The idea that losing clean in wrestling makes someone less credible. I feel like these guys should look at it more like a real sport. If there is a big rivalry between top face and top heel, both guys getting clean wins doesn't hurt, if it still culminates in an awesome finale.
Wrestlers should be beatable by lesser talent. I mean, no one would look at an NFL team poorly if they go 14-2 and win the superbowl. The WWE pretends their top face has to go 82-0 (unless they get cheated) to make their championship look credible.
Now Cena shouldn't lose to Darren Young, but if he and Punk actually had a few matches (3 maybe?) with them being intense and hard fought, with no shenanigans, or very little, would that be bad? What if Punk gets a clean win, where both guys wrestle their ass off, then Cena does the same, leading up to a huge PPV? Does that make either look bad to lose to such a powerful competitor? Not to me, it makes it look believable. Even the best can be beaten, but then you have your big match that determines it all(the superbowl!)
Of course all booking gets stale if you overdo it, but I'd like to see a lot more instances where a guy can win clean over a guy that is booked stronger.
Even a monster. What if someone like Mark Henry slips and falls into a submission after getting dragged into a long fight with an experienced wrestler that is lower on the card? Mark Henry then has motivation to go after this guy, and the second match could even end in a squash, but it makes guys human, while also showing who the top guys are.
I guess variety is what I like. That, and not such defined "tiers". Like Cena can not be beaten by someone like Ziggler. He can be hurt, whatever, he'll just always find a way to win. That's bogus in any sport. Boxing, MMA, team sports, whatever, anyone that doesn't bring their A game can get beat.
WWE isn't a sport, but you have to do a better job of making everyone seem dangerous. Most of the roster is just there to prop up the best. People like conflict, the perception of quality competition. Dominance makes interest wane.