I seem to recall a McDonald's in Kowloon/Hong Kong had this great pork sandwich. It was the best McThing I've ever had anywhere.
You'd never see a McEverywhere restaurant with all these interesting things available in one place because they couldn't handle the variety. Most McDonalds have a hard time kicking out the short menu they do offer, especially the new ones that embrace the cook-to-order system. What a mess that is at rush hour.
The McDonald's in Freeport, Maine, home of L.L. Bean, was also refused town permission to put up the golden arches. So the place looks like an Olde New England clapboard bed-and-breakfast, with only one small, tasteful gold-leaf "M" sign for identification.