Mexico - they need more street snacks, like the fruit cocktails they chop up fresh for you, or the "aguas frescas," fruit-flavored water served in bags with straws (so fun!). A Mexican bakery/panaderia might not be a bad idea, either.
Germany - make "Sommerfest" into more of a "Schnell-Imbiss"-style counter service restaurant, with lots of selections of quick, cheap wurst. Yum...
An aside on the Magnum bars - I think I ate my fair share of these while living in Mexico. They were quite delicious; I liked the one with the almonds. (At least I think that's where I ate them; I do remember buying them at the zoo and convenience stores there - or am I getting this confused with another country?)
Germany - make "Sommerfest" into more of a "Schnell-Imbiss"-style counter service restaurant, with lots of selections of quick, cheap wurst. Yum...
An aside on the Magnum bars - I think I ate my fair share of these while living in Mexico. They were quite delicious; I liked the one with the almonds. (At least I think that's where I ate them; I do remember buying them at the zoo and convenience stores there - or am I getting this confused with another country?)
I was so looking forward to the Norweigan cafe I really needed to stock up on my skillingsboller (pronounced shillingsboller) intake in between trips to Norway!
Gem 

(and please, nobody post something stating that they have the U.K. already, I don't mean the U.K., I mean the Republic of Ireland.)