#4: Promos must be approved in advance

The structure of a WWE television show allows very little freedom with just about everything being micromanaged. Many things change at the live events with more control of the match being in the hands of the wrestlers, though not everything is different.
One thing that is treated the same way regardless on whether it is televised is promos, as Superstars must get their speeches approved before they cut them, even if it isn't aired on TV.
This is probably because in this digital age, even a promo at a Live event will eventually make its way to YouTube or other forms of social media.
WWE don't want to take the chance that a random promo cut in the middle of nowhere could cause serious damage for the company's image down the line.