I was at GenCon, had a good time. A lot of game-wrecking bugs (hi there, uniques being able to be be in play in multiples, half the graveyard recursion cards not actually working, playing a second a inferno causing the game to crash, etc), but generally an enjoyable experience. Pretty much every game was fun, outside of the bugs and standard Magic-style "welp, mana-screw" games (which aren't fun regardless of which side of the board you are on). Not really much to say about the game from the GenCon stuff. It's starter decks for the part of the game that's not super-innovative. It was about as fun as ramming Magic the Gathering Intro Packs into each other gets.
What was fun, was watching people completely lose their shit over bugs in a pre-alpha product. And even moreso, seeing people who apparently have never played MTG before (there were a TON of these in the hex line, oddly), work themselves up into a lather over getting mana-screwed or flooded.
Did enough games to get 8 of the alt-art wolf, 2 of the mercenary, and one set of sleeves (whee, Team Fortress Hats). Had more fun than I did in some of the events I was in for actual real-live card games (Legend of the Five Rings is like slowly jamming needles under your finger nails right now).
Main downside was that the Hex gaming area was right next to the "Bushiroad" area, which contained a product I thought was some kind of internet joke until I actually saw people like, playing it. Wife-wars; get your random anime little girls and have them fight to the death.
Also, holy shit was the WoW TCG area small this year. I guess Blizzard announcing Hearthstone pretty much killed it.
Also, Thrawnseg, they said the opposite at the Dragonlord dinner (these promos are not to be available later). So at this point they're blowing smoke up everyone's ass to keep everyone happy, and we have no bloody clue how they're actually going to handle the promos.
I will say, I was disappointed in the professionalism (or lack therof) of the staff, and some questionable choices in handling issues. When individuals lost a game due to a bug in the programming, the staff just shrugged and handed two tickets to the winner, one to the loser. Consistently. When your own lazy programming screws people out of games (all 0 cost cards are quick actions coding shortcut was particularly zesty for the dwarf deck, but thankfully they fixed the "random number generator seeding off system clock's minute entry" issue), you should probably just "sack up" and hand out two copies of "ticket you're going to just re-hand back out after its redeemed for a digital award that costs you next to nothing to produce." Most of the people there just seemed annoyed to be doing work that was, in all likelihood, not in their job description.
Additionally, escalate cards are pretty bonkers in a low-power format.