I doubt they're going to be trying to trick you - any later consequences should be somewhat predictable or offset by whatever short-term benefits you got by making that decision in the first play.
 
The actual investigators wouldn't know what the long term consequences are in most cases, so why should the player?  You're always free to do the campaign again and choose differently.  Or hey, it's your game.  Skip it if you really don't like it.  Nobody's gonna call a tournament judge over on you.  But personally I think it sounds good that you might have to take future consequences into account when deciding what to do.

Also under Cancel on page 27 it says only executed abilities maybe canceled.  Playing a unit from your hand is not an executed ability.

Here we go from page 9 of the FAQ defines action effects as starting with bold Action.  Deploying a card is not an action effect.

Fury of Dracula-style game with a solo Rebel player trying to avoid multiple Imperial agents/bounty hunters while accomplishing various objectives.

The only solution would be to have 4 different Joust starters. Having 2 factions in each starting box. Then it would be possible to put "full" playable deck in the box and also have those extras, for those who need full 3. But then there would be many "not" useful cards to casual players. So Starter box has always been casual player friendly, who newer ever buy more that one box. 

They say in their home page that:
With a single Core Set of A Game of Thrones: The Card Game Second Edition, you can play a four-player melee, but with two or more Core Sets, you can play a melee with up to six players.
That means smaller decks and some common cards among the decks... Maybe 4 sets of neutral cards in one core?
So card distribution would be 1 to 4... Or there are neutral cards that are divided among many decks?
In anyway interesting to see how they do it this time... 8 factions from the beginning is not easy task to do...
One very plausible possibility is that there will be melee deck with one house + one alliance for one core deck, that would allow those 4 playable factions from one core set. But hot to make 6 playable faction from two cores... maybe using mono faction decks by using all cards from two cores? That would agree with the information of using two same plot cards in the plot deck...

Rotation is good! It is very important when the card pools crows big. It is very easy to make unbalanced combos when the card pool gets bigger and bigger. Also if there is not rotation, certain deck types will continue to dominate the gaming scene or there has to be constant power creep to replace those old "winner" decks.
The problem is less likely in casual play, but in competitive format, every player is looking for that killer combo that brings the victory and in long run it only leads to worse game!
I am not sure that if the 1500 cards is small enough for good game balance... The other thing to worry is if core and deluxe packs becomes the problem... Maybe they errata those? Is there going to be rotation also to deluxe and core packs? In the long run there could be 500000 cards only in core and deluxe packs... How it will be handled?
But summa summarum rotation is good!

In my opinion this is the blessing and the curse of LCGs. For bertter or for worse they will never be MtG.
 
You're right that a lot of cards from the Core Set are very good (the breakers, data suckers, account siphons) in order for different cards to force them out of your deck there would have to be a power creep that I don't think anyone wants to see. However just having a core set of cards does not mean that the meta is not evolving. In the last year alone for the runners it went from Noise shop pre C&C, to Katman right after, to Andy account datasuckers. And just because one deck is dominating doesn't mean the other ones aren't capable of winning tournaments. In the plugged-in tour in the middle of all the Andys and Kates there was a Whizzard deck that won. For the corp it's even more diverse as there are a number of different deck archetypes form HB FA to Weyland Tag-n-Bag to NBN never advance and let's not forget that this year's Gencon winner was Jinteki. So I think it's pretty clear that all kinds of different decks are capable of winning tournaments. And just because a particular deck is more popular then another one doesn't mean that it is absolutely stronger.
 
As far as replacing cards I disagree with you that every data pack has to have all 20 new cards to replace my old deck. In every data pack to date there have always been 1 or 2 different cards that I have gladly made room for in my decks. They enhanced my deck without fundamentally changing it which is what I think it should do. Slowly evolve a deck. As far as H&P is concerned I guarantee you that most Jinteki decks are going to want Mushin No Shin and Plan B, and you can definitely build a deck around chairman Hiro. And this is obviously just the tip of the iceberg. So again I think FFG is doing a great job of giving us more cards to play with without any crazy power creep where you have to keep buying data packs in order to keep up.
 
So back to my original statement that LCGs will never become MtG. The whole design of MtG is around making money. And I don't mean to be cynical about it. That's just the way it's built and people who participate in it know it and anticipate it. The fact that MtG is such a cash cow is not a bad thing either. The more profitable it is the more it allows WotC (and SCG and other smaller stores) to make bigger prize pools which creates much greater competition, which creates a proffesional scene, which means more tournaments, more content and just a much greater scene in general. This will never be the case for LCGs. There will never be enough money in it to sustain a professional circuit. Forcing the player base to buy a new core set every year or two would not alleviate this problem. Because it would still not make it nearly profitable enough to sustain the type of community that MtG has and it would turn most people off who started playing LCGs to not have to spend thousand of dollars to be competitive.
 
There is another problem with LCGs. In a couple of years when the entire card pool is a couple of thousand cards and in order for a new player to get in to it it will cost hundreds and hundreds of dollars it will become a barrier. But that's where the keeping the core set strong comes back in. This will allow a new player to start the game and be competitive from the get go without having to buy the entire card pool. They will be able to buy the core set, a deluxe expansion for the factions of their choice and a couple of data packs that have truly essential cards (Opening moves for the JH etc...) and be able to be competitive for ~$150 right away. That's why I love LCGs.
 
Sorry for the wall of text and the rambling. But I've thought about this a lot in the past and this seemed like a good place to post it.

And roll a dice and wait some time...
Then maybe...