Between Last Crusade (arguably his greatest film) and Phantom Menace Lucas directed one film - and it shows. We should have been forewarned with all the tinkering he did to the first three films, but the realisation that Star Wars had gone down the drain was still a shock when it came. PM is a disaster even from the opening credits, going on about a Trade Federation blockade. They were a confusing mess, and even having watched them recently for the third time (they ARE actually a bit better third time around) I'm struggling to keep up with the storyline and the zooming to different locations for the next set-piece. How is a kid meant to find any interest in trade negotiations or midicholrins?
The pod race was great, some of the battles looked amazing - in fact on Blu Ray most of the space-battles look astounding. But the storyline makes makes little sense, neither do the actions of many of the characters, the acting is poor, the scripted dialogue is utterly terrible. The dialoguie in the original trilogy isn't great, but the calibre of how it was delivered is. There is nothing to compare with Peter Cushing or Alec Guinness in the prequels, and GL got incredibly lucky finding acting gold nuggets like Harrison Ford and Carrie Fisher who really carry the movie.
It's quite ironic really, because the original Star Wars was built on a budget, with minimal special effects, few top-grade actors and low expectations that it would amount to anything. The Phantom Menace is pretty much the exact opposite of that , as are the outcomes that both films received.
As for Rogue One. Well, I'm old enough to have watched the original trilogy at the movies. There is so much great stuff in there, and they are all endlessly watchable. But Rogue One is as good as them. They got the acting spot on. They got the humour spot on. The story is interesting, and the viewer realises that not every Rebel in the Star Wars uniform is a knight in shining armour. And as has been mentioned, at the end we get arguably the best 4 minutes of the whole saga. Ever wondered why Darth was so feared across the galaxy? Ever wondered what the TRUE power of the Force could do (not just throws bolts of static electricity from your palms)? This 4 minutes was the redemption for having watched 7 HOURS of prequel-trilogy Darth, and it alsmot made up for it.