I think, out of everything in the entire movie, the one thing that bothered me the most was the military incompetence of both the Resistance and the First Order.
First, in the first space battle when all the Resurgent-class SDs came to drop bombs, no one scrambled fighters? Come the F on. It's almost like getting your **** packed in by small fighter classes is your hallmark regardless if you're the Empire or FO. Even the flight decks of the new Star Destroyers were designed to allow faster starfighter deployment, hence the massive overbite look. But yeah, after losing 2 Death Stars and Starkiller base to fighter actions, let's not fly CAP or run fleet protection sorties in any combat scenario. End result? Dead Dreadnought.
Second, did anyone for a second think that you can weaponize hyperspace travel and use it as a giant space railgun? Something capable of destroying multiple SDs and the Mega-class SD itself? Apparently, all it takes is a single MC85 going hyperspace, aimed remotely in the same direction as the enemy fleet and you got a weapon more powerful than the Death Star or Starkiller base. I mean, this technology (meaning Hyperspace travel) has been around since before the Old Republic. Who cares though, it's more dramatic watching the FO blow up like 28/30 transport ships before using this sick strat. I know the original plan was to cloak the transport ships and then bait the FO fleet away, but what do you think would be better? 1. Cloak the transport ships, turn the MC85 around and then hyperspacefuckyou the enemy fleet immediately, or 2. cloak the transport ships, run away with the MC85 and die anyway without taking any of those shitters with you. But nah man, 3. cloak the transport ships, wait until the FO kills 95% of your people, and then opt for Option 1. HNNNNNNNNNNGH.
Third, Finn was about to Randy Quaid his *** into the Death Star wannabe beam ID4 style but instead gets blue-balled by some random he met on the same day just so she can say "I love you". At this point, **** was bad enough that I said WHY NOT. I was hoping that one of those semi-sentient space penguin things would just shoot me in the face and get it over with.
You know what? Rogue One is still my favorite Star Wars movie of all time. You know why? It really gave me a sense of heroic sacrifice in a war-torn, unfair military scenario. The sense of scale was perfect, and I understood through the tone of the movie that good people have to give their lives for a mere chance that something can come out of it. In these recent movies? There's none of that at all. Everything is too giddy and mainstream, and even when things seem lost, I know I can just force pull myself back to safety from the vacuum of space. Come on man..