I think Costa Rica isn't as surprising as Greece. True, they aren't well known internationally, and maybe its my bias following CONCACAF, but they haven't surprised me one bit. They belong where they are and I wouldn't be surprised if they advance one more stage at that!
Greece, well by the universal sports definition of Cinderellas they are surely just happy to be there and unless some Prince Charming gift wraps them an easy win they're in way over their heads
Ivory Coast.. thanks for your condolences.. It was the national narrative more than the sports narrative that would have made that win so damned perfect. They like Greece have never advanced, and like Greece it was only their 3rd appearance ever. While Greece may have had some fucked up economics lately, I think its unanimous that in the 21st century Ivory Coast has been one of the most tragic places in the world. In that regard, just MAKING it to the World Cup as been big for them but like you said they have a talented squad to there are also realistic expectations of advancing, though all things considering they will not be as disappointed as it might seem. However, advancing would have been EPIC to say the least...