My general opinion of the game is: Meh.
AEG has made some awesome games in the past, but this one is simply a 'meh.'
There are two cards (one power: Air Superiority and one Edge: Knock out of the Sky) that remove the Flight ability, and only one card (Edge: Out of the Sun) that makes positive use of flight. Flight is completely useless for anyone other than a melee archtype (the edge card increases Melee damage).
Mez effects are 100% (unless you have mez protection, which is also 100%). Heartbreaker's deck is so one-sided it's not terribly useful to play.
It's been my experience that whoever gets the first turn wins the game (unless I'm playing HB, then she wins).
Also, with ties going to the attacker, it makes defending dang near impossible, since there are nearly 5x as many cards that increase accuracy as there are that provide any defense (including Luck insp discards).
With constructed decks you can only have 3 of any card. So, for a non-FF controller/Defender you can only have a pitiful number of defense-increasing cards (3x Bob & Weave and 3x of either the Jump Dodge or Defensive Teleport for 6 cards if your using the relevant movement type). Only the FF powerset has "Luck" inspirations meaning that you aren't going to have many of them.
The reply from AEG was that they didn't want the game to bog down into a defensive morass. They had no idea. I spend most games completely stunned (much like the real COH) because of the vast number of status effects that can be stacked on non-scrapper/non-tankers due to the utter LACK of defensive cards.
Here's hoping they can get it rebalanced for the first expansion. It's got potential, let's hope it doesn't get wasted like the MMO did.