Thinking about how the newest and craziest unit - Gluttony, will affect not only gameplay, but the acquisition strategies and P2W debate (if we had chat), similar to Voidmage after previous patch. Here's game mechanic idea:

AgentOfTheCrown
Either some action squares, or augmentation / passive: "If your opponent gifted you RP since your last win against him, you can not attack him / use this action."

Because opposite of Pay2Win is not Free2Play, but Bribed2Lose :) .