However, I don’t really appreciate questions like: « Country whose name can be made by adding two letters to Niger» or « only country on the Equator which is bigger than DR Congo » which do not tell about the countries themselves, but are rather comparative facts...
I am of the opinion to ask for the capital(s) of the UK is too easy.
You sort of have a point with the flags (but I wouldn't have gotten it, because I don't know Niger's flag, but now I will forever remember)
I do agree with the question "adding two letters" (but then again, I don't mind some shoo-ins to give everybody a chance to get atleast one right, as long as the other are interesting enough)
Anyone else? :D (my fingers often keep typing while my mind looks for more plausible answers)