Whew... where do I begin.
1) The Emperor - It is just offensive that JJ thought he could put Palps in the opening crawl and we would just accept it. Hey JJ, remember the main character from the first 6 films, Anakin/Darth Vader? He sacrificed his life to kill the Emperor. In the space of 2 sentences of yellow text you made his sacrifice meaningless. How can JJ just bring Palps back and not give us any explanation or backstory? What has Palps been doing for the past few decades? Who were the 1000+ Sith guys just watching the final battle (I'd say they were Sith ghosts, but when Palps dies the ghosts physically moved so they are actually there)? Where did all those Final Order ships come from? And don't even get me started on Palps' overall plan...
Actually, lets do talk about Palps plan. He hangs out on the hidden Sith planet for 30 years or so with his giant armada of planet killing ships. He invented Snoke to rule the galaxy in his place (why?!?!). He gets discovered by Kylo and then brings the First Order under his wing like the old Empire. He orders the First Order and Kylo to find and kill Rey... even though what he really wanted was for Rey to find her way to him so she could kill him and his spirit could inhabit her body. Do I have that right? Then, when Kylo shows up he realizes that Kylo and Rey are Force married, or something like that, and he sucks their energy to bring himself back to life (wasn't he already alive?). I can't even begin to imagine JJ pitched this to Kathleen Kennedy and she said, "yeah, that works!"
2) The Force - I'm not sure what JJ was thinking but every time he just needed something to happen, he would invent a new Force power for Rey and Kylo to use. Healing? No problem. Teleporting objects across space? Piece of cake. Amazon is going to set up a new delivery service where Rey is in the warehouse, Kylo comes to your home, and she just hands him whatever you ordered. I don't even begin to understand this Force Dyad thing that Palps suddenly started rambling about in the final 15 minutes of the film. What was that?!!? The heroes of Star Wars are people accomplishing great things by force of will, a little luck, and great faith in each other... they are not gods who can rely on magic to do whatever they want.
3) Fan Service - Look, let's give Chewie a medal. Look, let's have two no-name female characters kiss. Look, Lando is back (does he do anything meaningful?). Look, Rey has really important parents because the Force only belongs to a few families of people in the entire universe and no one else gets to play with it (hey Rian Johnson, <bleep> you). Ugh... was there a single brave choice made in this film?
4) The Sith Map thingie - Did we really spend close to an hour of this film trying to find a magical triangle? Are you kidding me? Supposedly Luke spent years looking for it (because he suspected Palps was still alive or something?) and Rey just stumbles across it in like 2 days. This probably drove me crazy the most of anything in the movie... every time our heroes needed something it would almost magically appear at their feet. It was offensive storytelling... an abomination. A high school English teacher would have sent this script back if a student turned it in.
5) Kylo/Ben - Why did he turn from the Dark Side? Was it just because Rey healed him? We spent 2 movies with his father and his uncle/mentor quite literally giving their lives because they believed in him and then he just turned on a dime for no discernible reason. JJ was not satisfied with making Darth's death meaningless, he had to do it to Han and Luke too.
6) The End - When Kylo died after reviving Rey I laughed out loud... really loudly. It was just sooooo awful.
Ok, that's enough for now... so frustrating.