Gravestone Refunds

Currently all gravestones refund 20 elixir when removed. This is true no matter a Pekka died, or an archer died. My suggestion is to refund 50% of the troop cost to the defender per unit. For example, if the attacker uses 100k worth of troops and they all die, the defender will receive 50k upon collecting the gravestones. It would also be a great feature if the attacker received the 50% refund for all troops that survived the battle. The attacker would ONLY receive the refund if he gets 100% or the battle times out, however. This is to stop an attacker from ending a battle prematurely if he knows the troops will die, and wants to receive a bonus for the troops that are still alive when the battle ends (But would have died if the battle had continued).