Dany had 5 chapters in ACoK and 10 in ADwD, only 1 of which was enjoyable to read.
'Enjoyable' is a very subjective criticism and hardly the point. The point is that all the books are bloated, often with things some readers don't find interesting at all. In that sense, Feast and Dance aren't any different from the first 3 books.
I think the reason it felt off is because there were too many separate storylines and few of them actually intersect. From a reading stand point (also, from someone who read 1-5 continuously) I didn't mind this too much. However, I have no idea how they will film season 5-6 (Feast and Dance) while keeping the viewers interested. By this point we'll have 10 different stories from characters across the world and I think viewers will be pissed that instead of getting any form of resolution to these arcs, we just get more characters and more separate story lines.
They intersect less, but the implications of how they all connect are still there. Cersei is ruining Westeros, and Brienne feels the effects. Baelish and Sansa are preparing their counterstrike, as is Dorne. Jaime is meanwhile helping finish up the war. Arya is training as an assassin, which spells doom for many characters in the series. It's all still connected. Feast just suffers from slow pacing and lots of it being set up, but that doesn't make it a bad book, it just needs the rest of the story to justify itself.
Word. The change was staggering, even though i agree with those that say she is now more in line with what we expect from a teenage girl rather than this all conquering badass heroine.
I didn't like the first time I read her chapters, but I think I will when I reread them. Also, it's the opposite of what you said. Dany was attempting to be a mature adult, where as before she acted like a teenager. Her strategy with the other cities in Essos were to pass a city, conquer them if they were being evil, then put the oppressed in charge because she thought everything would be cool afterwards. If that's not naivety, I don't know what is. Instead, she tried to stay and try her hand at ruling peacefully, being a good queen. She SUCKS at it, but that does not make her immature, as she realizes it at the end of the book and she is disillusioned. Now I think she is going to go back to being a conquer, but she won't be living in the dream that she's somehow a hero and fixing the world because of this. THAT is adulthood.
The character arc is a good one, but it's hurt not by it's content or writing, but that where she was competant in her actions before, she now struggles to rule. It's not as fun to read about someone who makes mistakes as it is about someone who is kicking ass, but ASoIaF is not about fun. I'm not sure why people don't realize that by now. Ruling simply not her forte. Also, the names were very confusing, and that they were all new characters was hard to keep them straight in your head or think about them the same as you do of Varys and the rest of the council in Westeros that we are familiar with, which made them harder to connect with. But the pure content and arc of her section? Awesome.
I don't hate Daario, I hate how Dany reacts to Daario.
It's no different than Tyrion constantly going to Shae.