When I was a kid and IV, V & VI came out, there was talk of 9 movies. The whole thing about there ever only being 6 and it was all about Darth Vader was Lucas retconning the franchise for some reason. As a matter f fact on my recent vacation I went to a small store/museum that had a press release on display promoting Episode VI that talked about the next TWO trilogies. So this was always in the works, but went on the back burner for a while.
That being said, I don;t think anyone envisioned Disney taking the reigns or that anyone like JJ would ever be around to ruin franchises. Then again who would have thought movies would make movies that slaughtered other shows, like SWAT, Starsky & Hutch, The Brady Bunch, ect. Sometimes I think they (Hollywood not the fans) should just let this stuff die a natural death and not try to make more.