I think not, I have done it so many times I don't see my author scores being affected by it.
I know in some ways it Each time I revisit my hubs to correct or go to it on other web sites it always register.
Yes editing your hub affect your overall hubber-score.
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.