That's right. I want the amount of HP your enemy has left at the end of a match to effect how much coins you LOSE.
Similar to how you win less for close games I guess.
Yes, so simple. Raise the cost to enter a game a tiny bit and let you lose less for close games.
I know, so pretty, yet so wise
I actually really like this idea. Just one suggestion:
Do it % wise. So if your opponent is at 100%, you lose the said amount (30 for FGs).
PuppyChow's idea would accomplish the same without involving my outlandish reasoning for increasing the cost to get in.