Originally Posted by
SuperiorIronman
Sure the Death Star had a built in weakness now but no one could actually hit the weakness itself. The Death Star may have a built-in flaw, but the entire station still functioned as expected, it still destroyed planets as designed. Security worked, the station was a nightmare to infiltrate, turbolasers meant you couldn't just take a fleet to it, and the Tie fighters would shoot down remaining starfighters. The Rebels couldn't destroy it without the aid of the Force.
Yeah, this movie changes thing from a tiny flaw people couldn't hit into something designed to be hit that they nevertheless still couldn't hit. Before it looed like they accomplished the impossible, but the new information recontextualizes what happened before. Now it looks like a bunch of people failing to hit the ball off the tee.
Was the station a nightmare to infiltrate? It didn't seem like it was.
The Death Star meeting room scene doesn't mention the exhaust port, though Tagge does admit that a flaw can be found within the Death Star plans though even he admits it's unlikely they (the Rebels) can destroy the station. The consensus of the room was that the Imperials had been confident in it's effectiveness and that Darth Vader would recover the plans before any attack could be formed. Even if an attack was mounted against the Death Star no one seemed all that worried until someone got right up onto the exhaust port and even then the Rebel couldn't hit the target. Even then when they did blow up their first planet, Tarkin and company appeared confident enough to give a full demonstration and had no worries in the weapon performing at peak effectiveness, and of course Alderaan is destroyed then it did everything it needed to do.
The meeting room scene doesn't tell you a flaw can be found, or that they're even aware of one. It only tells you a weakness could maybe be discovered in the station given they have technical readout of it, although that it's unlikely that could happen. Then again that makes sense, given the whole stupid idea about a flaw intentionally being built into the Death Star wasn't even an idea in '77. Given how Star Wars plays, and the new information Rogue One gives us, it would seem they had no idea there was a special place that could be hit that would bring the whole thing down.
How was this even the Rebel's first win? The crawl states that this had been going on for awhile which was part of the reason Tagge was so worried about them. The Rebel's while not making substantial progress had been active and fighting the Empire long prior to this. They may not have been as organized prior to Rogue One's events but the Rebel Alliance wasn't really a thing until the end of Star Wars anyways. There had been 20 years of Rebellion since Revenge of the Sith.
The crawl in Star Wars tells you this was their first win. The movie opens with:
It is a period of civil war. Rebel spaceships, striking from a hidden base, have won their first victory against the evil Galactic Empire.