Just thought of an amazingly obvious one:
Have Faces Actually Act Like Faces And Only Let Heels Do Heel Stuff
Exhibit A: Cena/Rusev build, which basically consisted of "Cena challenges for title, Rusev beats him somewhat dirty..."', and:
- 20 years ago would have concluded with "Cena has to fight a bunch of other people while Rusev ducks him and squashes his friend Zack Ryder, which makes Cena go on a Rocky IV Training Montage in Siberia to take Rusev out"
- this year consists of "Cena attacks Rusev outside of a match and physically abuses him until he gets what he wants from his screaming girlfriend/whatever Lana is".
Exhibit B: Brock Lesnar is a heel and Roman Reigns is a face why exactly? Because WWE says so? Because Brock Lesnar has done dastardly stuff like being really good at wrestling?
Exhibit C: Randy Orton is a face because he beats the tar out of Seth Rollins outside a match for longer than it takes an average cricket match to finish, because Seth Rollins is naughty so it's OK. (This one doesn't specifically bother me because of Orton's character, but whatever.)
Exhibit D: Face Sheamus Brogue kicked literally everyone that offended him by, for instance, existing within range of a Brogue kick.
Basically I'd sum it up as "WWE expects their faces and heels to be 'whoever they tell us are faces and heels' without differentiating them in any other meaningful way, and that blows. And it shows up in announcers as well."