I think 2 minutes is about right for all skill levels. For the geo-pros, they probably need about 30 seconds (if that), but for others, 15 seconds to think about each country and guess some if you don't know is long enough.
However! I may try a speed special, with stricter time constraints :-)
I like your reasoning, people that pride themselves on their typing speed can test themselves against the clock. Those of us that like the mental challenge not the speed-typing challenge applaud you.
However! I may try a speed special, with stricter time constraints :-)