If you feel that Star Wars is ruined because you don’t like one or two movies then guess what, the problem is with you and not Disney. A few bad movies will not kill a franchise this massive. If that was the case then Star Wars would have been ruined and dead a LONG time ago.
Star Wars has a history of being uneven. At best.
Let’s look at the original trilogy. It has two fantastic movies and one that was OK. I always liked Return of the Jedi but a lot of fans crapped all over it. After A New Hope and Empire Strikes Back, ROTJ was viewed as a major disappointment. People tore apart everything from the opening sequence at Jabba’s Palace to the Ewoks. Out of the Original Trilogy it also has the distinction of not aging as well as the other two.
So we have one meh movie and two phenomenal movies. Not a bad track record so far. But let’s look at everything else that came out before the 90’s. The Holiday Special, Ewoks: Caravan of Courage and The Battle for Endor, the Ewoks and Droids cartoons… all of those were loads of crap. Now the ratio of good vs crap is much, much worse.
Star Wars still wasn’t ruined.
Now we enter what is arguably the golden age of Star Wars. The birth of a cohesive Expanded Universe with the Timothy Zahn’s Thrawn Trilogy. Like the rest of the Star Wars universe you have some fantastic stories (anything done by Zahn, X-Wing, Dark Horses Republic series once Ostrander became a major writer on it), and some absolute garbage (most of Kevin J Andersons work, Trioculous, Dark Empire, Calista’s stories).
You know what? Star Wars wasn’t ruined.
This brings us to the Dark Times. The times of Jar Jar. The times of little Annie and pod racing. The times where we learn just how diabolical sand is. The times of the Prequel Trilogy. The most positive thing I have said about those movies is “Revenge of the Sith isn’t complete crap.” That is the best I’ve heard a lot of other people say as well.