I've made a uservoice idea that I think would make for a pretty neat feature:
http://warlight.uservoice.com/forums/77051-warlight-features/suggestions/11006058-card-marketHere are the contents of the Uservoice:
When creating a game players will have the option to enable the card market.
The idea behind it is that players recieve coins (or some other type of currency) as they capture territory just like normal cards. These coins can be used in the cards menu to purchase cards.
It can be used alongside the normal cards or games can be created that reward exclusively coins.
This mechanic can also be very customisable, as players would have the option to:
-Reward coins for every territory captured that turn.
-Reward coins per turn. They can be rewarded by a set amount, or be dynamic, rewarding more (or less) coins as turns go by or based on the player's income.
-Enable the purchasing of individual card pieces.
-Lock the purchasing of cards until a certain turn (Example: Spy cards cannot be purchased until Turn 5)
-Have a cooldown on the amount of cards that can be purchased over a period (Example: Reinforcement cards can only be purchased every 3 turns)
-Limit the amoint of cards that can be purchased per turn (Example: Only up to 3 cards can be purchased each turn)
-Customise the cost of a card or a card piece.