I was at the bookstore today buying a new book and I ended up in a conversation with some guy about the old Star Wars books. Between the two of us we hatched a wonderful little theory about the Legends Universe. Palpatine set up the entire Clone Wars, Wiped out the Jedi, built up a massive warmachine and prepared the Galaxy in preperation for the Vong.
Hear me out. The Old Republic lacked a military, the Jedi were essentially useless against the Vong and there would have been no time to build a military once they showed up. And Zenoma Sekot had shown up during the Old Republic era and Tarkin did come in contact with it and reported back to his buddy Palpatine. If you look at the military Palpatine built, it essentially was the perfect force to face to Vong. Massed number of troops. Powerful warships, including Super Star Destroyers that could easily face off against Vong ships and a Death Star that would be perfect for killing World Ships in a single blow.
So essentially, Palpatine was preparing the Galaxy for a Intergalactic War. And the Rebels unknowing weakened that effort. What do you all think?