The other thread gave me an idea.
More of the same expansions are fine, but how about an expansion that really changed up the core gameplay?
I propose a separate spell deck you could draw from for the cost of 2 War or Command. You could then use those purchased spells at any time to affect battles or other areas of play.
Freezing Grip, Effect: Target enemy card's power is reduced to 0 until end of turn
Sacrificial Pawn: Move target warrior card from your hand to your occupying forces pile. Draw two extra cards at the end of your turn.
This gives you a way to more actively interact with an opponent and something to do with excess resources instead of just cycling cards.
What do you think?