I don't think he meant that Aegon "took the bait" like he's leading him into a trap or something. I think he means it more like Aegon is acting upon the idea Tyrion planted in his mind during their game of cyvasse.
Favorite: Theon. Amazing character. His chapters in DwD are incredible.
Least favorite: Balon. Probably my least favorite character in the series. Awful person. I enjoy "evil/villain" characters if they're interesting and/or funny a la Roose or Joffrey but Balon is just a turd. A giant turd.
I find the decision a little strange to be honest. Tommen-Margaery in the books never seemed creepy to me but more like something a bit funny and awkward since it's the only way the Tyrells and the Lannisters can keep their alliance and keep Margaery as Queen. And they were only betrothed to be married when Tommen came of age anyway (but that seems farfetched now that Margaery looks like she's in her late twenties/early thirties). So I don't know really why it would have mattered to much that Tommen was really young and engaged to Margaery. A bit ridiculous maybe, but so it was in the books as well.
I wouldn't be too surprised at all if they recast Kevan as well now. But I really dislike this thing where they keep a character out of the show and the suddenly introduce him like "Oh hey, here's Tywin's brother. He's been off chilling somewhere during all this time without being mentioned at all but now he's here and he's gonna be very involved." Seems like a lack of foresight to me :/
Howland Reed will revive Ned's bones using some kind of badass magic. The Ned will then somehow encounter the BWB and Lady Stoneheart, take Oathkeeper and stab her through the heart effectively becoming Azor Ahai and save everyone. Go Neddard!
Am I wrong in assuming that the Florents are pretty much done for? After the Blackwater battle they were attainted and Garlan was made Lord of Brightwater Keep so the Tyrells pretty much own the Florent lands and castles. Unless Stannis wins and restores them for their loyalty, I guess.