Here's a simple proposal to fix a lot of the problems of the game all at once without changing any cards.
What if the deck construction rules were changed so that you were only allowed to play 3 copies of any card instead of 4?
Obviously, I'd like to know what the community thinks such a change would mean, so first, some of my thoughts in no particular order, numbered to make responding easier:
1.) Right now 4x 15 equals a deck. With this change players would need to run 5 more playsets to fill out their deck (3x 20). More cards in the environment should make each deck feel more unique than it is now since there aren't 5 more infinity cards waiting to be played. Decks would gain more "resource identity".
2.) Because the odds of drawing any particular card goes down, decks become slightly less consistent, which I believe is a good thing.
3.) The hardest staging areas in the game would get easier to beat because fewer control pieces would be available. With only 3 copies of Blood Runs True to draw, the odds are that you'll see 1 by the 3rd turn (or so) of the game than the 2nd (or 1st with mulligan), giving your opponent time to set up and not get immediately locked out of the game.
4.) Only having to collect 3 copies of a card like Feline Spike or Raging Gnome saves players $25-50/ea on the singles market, allowing more players to be able to afford the decks they want while also allowing the supply of cards to serve more players.
5.) The biggest downside for FFG is that players would be able to buy 1/3 less boxes to get the same thing they get now. I suspect though that most people would just opt to spend the same amount of money they are spending now and instead have 1/3 more boxes in order to get more ultra-rares.
Enough of me, what does everyone else think?