I would guess Guardians of the Galaxy before X-men or Fantastic Four, probably with a couple of Guardians from the MCU movies and a couple of lesser known Guardians thrown in much like She-Hulk in the core set. But I would not argue with any of these groups getting picked as I would like to play with as many characters as I can.

I get the feeling that the only decks to actually make good use of composure would be dueling decks whose duels kind of force the opponent to try to win them, or a Scorpion duel deck that utilizes Social Puppeteer.

The last several decklists I made out has had a majority core set population. I hope the next cycle has cards that make it harder to decide between core set cards and the fresh cycle.

Fixed that for you

With the wording on proving grounds, it does look like you can use it to react on both, since both characters won a duel. I am not sure how often this will come up, though, since it would be a bad play to use her duel where it is not mostly assured to win against an opponent who has proving grounds up

I am looking forward to disguising in a character with a non-unique army character. "I disguised myself as an entire army, and they didn't know it was only one person. HA!"

Looks like it, as it states they enter play unbowed.

The article says you can play a disguised character anytime you can play a character from hand.

Miya Library will only grab characters and not holdings.

I have mind barb in mars with two normal mind barbs in the deck, and a poison wave in brobnar.

It is even better when their province has an action rather than an action, and you attacked with a child of the plains to eject out of that province. It would be nice to get out of Shameful when you can.

I like the idea of it firing from a shameful display myself.

Utaku Tetsuko seems to be the strongest card in the pack. And that Scorpion got a conflict courtier in-clan that doesn't cost five fate is nice. Shinibi decks might be a thing, but I am not sure yet. It may still be missing their Togashi Mitsu. Personally, I do not know how many of the cards from the pack I would end up using competitively, though I do see myself playing shinobi for fun at local games. I see Doji Fumiki being played as Crane has a few bow effects going on. I am not sure about the new stronghold yet, though ready effects are pretty strong, being able to take an honor from an opponent is really strong.

The cards previewed are interesting so far. I am not sold on dueling yet, but maybe this boxed set can change my mind. I like that there is a neutral card that lets you refuse a duel, though if dueling becomes too good it may force decks to take a couple of copies just to stop some duels from going off. I do not feel composure will work out well, since having effects rely on having a higher bid has not worked out so well for me with Scorpion so far. Time will tell, I guess. I am looking forwards to this set, though. More cards to use is welcomed. I hope there are at least two copies of any neutral provinces in this box, as I do not like having to share cards between two decks, even if they are provinces and not shuffled in a deck.

Now these are great!