Dany becoming the mad queen is the least suprising thing ever.
The steps towards that was rushed though.
What would you say the steps towards that were?
Dany's probably the only character in the show that's always done her best to seek a better ending for everybody e.g. She spared literally slavers because she saw the systemic issue of being born into the position, Arya on the other hand butchered the Frey's when they sins were they were born into the family and Rob fucked them all over. If anything Dany's mistakes were that she didn't just murder all of her rivals people. The worst she did was murder turncloaks who did utterly horrible shit to her when she was always loyal to them, which is less terrible than the shit Ned pulled in the first episode where he murdered someone for being terrified and warning them of white walkers because he blindly followed law.
Also I'm not buying anybody trying to say this is a nuanced show with no good and bad sides. The only greyish characters were Melisandri who's blood magic feel failed during her most powerful sacrifice then came back as a level 20 cleric with no need for sacrifice, Stanis because he tried to end battles with the fewest casualties through nefarious means who died to a legit evil person, then the High Sparrow who legitimately fought for the small folk and against the corruption of power/money at the cost of radical religious authoritarian rule who also died to a legit evil person who gave him power in the first place.
There's blatant good and bad in the show. The conclusion then needed to resolve conflicts of interest between good characters so they had the person who's done the most good turn evil because she saw a building. When the writers suggest there's no build up to this and it's just random as fuck maybe don't support their shitty decisions.
Also a reminder that Bran could have saved all the lives at Winterfell given he knew it just required him and Ayra plus all the civilian lives at King's landing. He just seemed to want to go with what got him the throne...