2, 6, 9, 25 for salty asks! Whatever fandom you need to rant on (i have an idea what it is, go for it and enjoy!) :)
I have only been truly salty in two fandoms in my life: Game of Thrones and The 100. I am mostly over both of them now, but I will say this, while I will be 100% over GoT eventually and may even rewatch next year, I will never be able to watch The 100 again. That said, I'll answer this for both of those dumbass shows.
2. Are there any popular fandom OTPs you only BroTP?*
For The 100, Murven is the first one that comes to mind. I just don't like them or get it. To be honest, I am not at all convinced that LM and RH had the chemistry to pull it off, but even if they did, having someone who is disabled be with the person who disabled her just feels wrong on so many levels for me. I don't like it and the development wasn't on the show for me to even contemplate.
Game of Thrones on the other hand, had a few that come to mind but one I absolutely don't understand what people saw in Theon and Sansa. I thought Sophie and Alfie had wonderful chemistry but I didn't see it as romantic at all, but they for sure saw each other as comrades and kindred spirits. I do not get it.
6. Has fandom ever made you enjoy a pairing you previously hated?*
Clurphy all the way! My special Slytherin pals! Clarke and Murphy should have had a solid relationship on the show but they didn't and if you had asked me about them just based on what I saw on screen, I would have been so confused by the thought. Fandom, especially fics, have just opened my eyes to them and now I can't close them at all. I love their sass together and their weirdass dark humor. Love them now and I won't be stopped.
Jonsa is the one that comes to mind for Game of Thrones. I was grossed out by the sibling thing on the show and how Jon so clearly saw her as his little sister even if I do think Kit and Sophie could have pulled it off if the writers wanted to go there but it was once again fic that made me love them.
9. Most disliked character(s)? Why?
Both have so many and for so many reasons, I don't even know where to begin.
The 100, I don't like Lexa and Echo. They both were thinly veiled strong female characters clearly written by men and were so underdeveloped their motivations rarely made sense. They had almost no characterization that was consistent and anything to love about them has been created by fandom and projected onto the screen. Neither were the feminist icons fans like to pretend they were and both were bland at best.
Game of Thrones, Ramsey need I say more. I also have no love for Stannis and Bran. Both of them were just sanctimonious assholes who thought the sacrifices others made on their behalf was worth the greater good because they died for them and they were special. Both of them were just god awful rich white men. Bran being disabled went no where in the story at all for such a big part in the first season and Stannis killed his brother for power and there was no redemption for me after that. Anyone who does anything for power is just a dick. Also, the moment Bran said, "Why do you think I came all this way." I knew I was never going to be able to rewatched without hating and resenting him.
25. How would you end XXX/Would you change the ending of XXX?
All of season 7 of The 100 sucked and it would be too complicated for a single post. Mostly, I would not concentrate on a stupid green space fog and a cult that came out of no where and focus on the closure for our characters. I don't how any decent writer would spend their last chance to be with their story and focus on a different story and characters for a potential prequel. You get one chance to say goodbye and this is what they choose and it makes no sense and they have no integrity or creativity.
Game of Thrones is easier in the sense that my biggest gripe was the pacing. Season 8 started too slow and then went way too fast. They didn't let the needed development for their ending to make sense exist on the show. They needed a few more episodes or a whole other season to really let that story breathe. That and I would not make Bran the Broken (an offensive thing) king and I would give Jaime the respect of his development deserved. Other parts of the finale I almost understood.