Yes, we can do a whole set of comparisons for the countries playing the world cup.
About the players data, very nice data, but anyway it is always different how they play in their national selections than in their regular teams. And no match is decided until it is played!
Anyway I wonder if we could also classify the teams by how well they fit into that model of player features by position. Is a team with all its players closer to the avg of that plot a better team? That kind of questions could be interesting to compute.