I would assume that most players aren't looking for a challenge, which is why they play as the powerful nations and most players also aren't engaged enough to bother coming on the forums, so we think what is written here is more popular than it really is. I really enjoy playing with custom nations, I like being able to select my NI to suit my goals, but also I've played so much since launch that it is nice to play in the same places, but with a different structure. My current game has me in south of France and northern Italy, I could've got there from one of the smaller nations, but because of the provinces my nation started with, France was a little weaker and the whole area was in a lot of turmoil for the first 200 years, which made playing in western Europe very different to how it normally goes.
As for the RNW, would gladly wait 10-15 minutes to get a more natural continent to explore. I love the idea of it, making exploration actually worth something, but as it currently is, just isn't really that fun to play with.