At first, it will be awkward to hear "The Mercedes-Benz Superdome!" Eventually, we'll get used to it, especially once we can quantify the amount of cash that it brings in. Mercedes-Benz is certainly one of the most classy names with which one could be associated.
I really wanna see the Benz logo painted on the top of the Dome. Then hippie protesters could paint in the bottom line to turn it into a peace symbol. Which would help in case aliens invade Earth, they would see that and back off.
I don't mind it that much. It keeps the state from subsidizing the Saints with tax payer money. Not only that, NOBODY will ever say 'Hey, we've getting ready to head over to the Mercedes Benz Superdome. It is and always will be 'The Dome'.
Right, the TV announcers will use the official sponsored name. It won't change in common conversation