I think he is going to give lucy a huge part at the end hes using secondary characters first (gray/ezera) then hes going to put it all together. The latest chapter about lucy's mom is probably another hint into the bigger picture with natsu and lucy.
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.