Mc Donalds was good tasting and fast when they served hamburgers, cheeseburgers, fries, shakes, and a few other limited drinks.
Exactly what In 'n Out does today. Very limited menu, good quality, freshly made, reasonably priced, cheerful servers. Like the early McDonald's.
A return to beef tallow-fried salted French fries, hamburgers that actually taste like real beef and are bigger and thicker than a dime, and chicken that is not processed in China would be a start.
In my locale, "regional offerings" means you can have jalapeno peppers, jalapeno relish, and extra-hot hot sauce on your apple pie.