Scruffy said:
The common denominator here is that these series crashed after the original creative talent left, or was dismissed. Not so with Star Wars: George Lucas was always there. It is with some perverse delight that I imagine the series might have been better had Lucas relinquished more control in the 1990s. Or maybe it would've been much worse. There's really no way to know.

Thats a fair point, but then I will bring up movies series that got worse with the original creator:

Lethal Weapon IV: All of them were directed by Richard Donnor and this one totally sucked.

Indy IV: Spielberg and Lucas still at the helm, as this was ridiculous, and the worst of the 4 Indy movies.

Rocky V: Though Rocky VI sorta redeemed the series, this movie left a bad taste in my mouth the minute I walked out of the theater. I have yet to watch again.

These movies were all made years after the original, and all the creators were well past their prime. As I said, post 1983 SW pretty much sucks, but if you drag these movies series past 3 movies, they all usually start sucking too.