As I said there's a lot of sense of Kylo being a Vader clone,I kinda doubt the tech to clone was just tossed aside after the clone wars true they may have dropped in importance as they needed WAY more troops then cloning could provide but for certain uses it would be invaluable (Imperial guards for example,or commando type troopers) and if no one said anything in the original films how would we know?
At the end of ROTJ when the Empire was probably scrambling to reorganize it would make sense that maybe some bright spark thought "you'know Lord Vader was a bad arse in his day,we have some DNA of his why not do some cloning?" maybe it worked,maybe it didn't,maybe it worked TOO well and we've got this obsessed fruit cake running around.
And what if Vader had an apprentice? what if this person decided the best way to carry the Sith on was to clone his (or her) master,raise it and tell them "Vader was your daddy" now the boy has a raging urge to go finish poppa's work?
I think you could do a lot of interesting things that would make stuff very complicated,God you could have so many of the people not only pro Empire but pro Sith and that's how the Order of Ren starts,a bunch of Sith practitioners making a knight like order,maybe Ren is the one who cloned and raised Kylo and founded the order.
