So I am not overjoyed about the spark system (even though I have about 70) as it really increaces the price of reviving people on long clockwork trips. It kinda takes away from the teamwork and cooperation. I once had a guy beg me for 5 minutes for a spark of life on a vana run over and over and as much as I wanted to rev him, I have a policy to never use my sparks unless a boss is almost dead or its an event.
So here is my idea