There is a big problem with the Wampa, and it is probably bigger than the fact you don’t know what a Wampa is. It’s the Wampa’s understanding of liquid properties in freezing temperatures.
Also, what would happen if the US bought Canada?
Finally, the dark past of Doraemon gets figured out and we realize that he isn’t there to serve Nobita at all. No, that kids cartoon is messed up.