Limbo is a shared state of mind. No one actually 'dreamed' limbo by themselves. I'm having a hard time trying to figure all that out myself.
Cobb was never in his 'own limbo'. It took a long time between Cobb getting washed up to the beach and Cobb getting killed by Mal, so Saito perceived it as decades passing by. Sorry if I didn't really make a whole lotta sense, but it was confusing to me too.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.