A 1. They never mention a child in the original trilogy because they first met in the original trilogy... keep in mind that The Force Awakens takes place 40 years AFTER the original trilogy so thats plenty of time to "get busy". A 2.
The giant hologram is most likely Kylo Ren's new master, the one who turned him to the dark side. Also keep in mind that The Force Awakens is very similar to the originals, so he is basically filling the role of The Emperor. A 3.
If you want to see more "geek status" to Kylo Ren's lightsaber, check out this YouTube video to learn more about it. Https://www.youtube.com/watch?v=L_9YtySWlqA.
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.