I'm starting to hate the deck system
The whole thing is just a big rock-paper-scissors, the strategy you employ matters little compared to what deck you have, so most of the time the winner is the person whose decks happens to counter their opponent's. Yes, you can make a versitile deck, but it'll just fall into being a jack of all trades and master of none.
Compare it to SW2/SWE's faction system, where you get all the units from a faction, and if you see your strategy getting countered, you could at least try changing your army composition, or pick what units you're going to build depending on what faction your opponent has.