I think originally it was Anakin Solo who was supposed to fall to the darkside, but they were not only not allowed to tell that story they were ordered to kill him off because we cannot have two Anakins. So Jacen was the one to go bad. Also Luke was supposed to be the one to die at Jacen’s hand not Mara, well Lucas wouldn’t allow it. Karen Traviss wanted Luke to die.

Denning actually wanted to resurrect Anakin Solo, it was not allowed.

I don’t know if there is anything i really hate in the New EU, its all so Meh it barely warrants any kind of reaction or response. We don’t have wild stories and crazy stuff anymore, like even the bad old EU having some kind of creativity, All the new stuff is just all so same. I guess you would say homogenized. Or its not an Expanded universe is an explanatory fill in the blank for the Disney films universe.