Allow at least 1st, 2nd, 3rd to earn prizes. Break up the jackpot among the winners for the event. Think this would be fairer than the current system of prize distribution where one takes it all. More folks get a shot to score the podium. Not restricting ranked rewards for Survival. Other events should be arranged as such too.
This could well be done for manual events or ones which have large prizes on offer, like the one yesterday. But typically survivals are only 1m gp max so it's not really something you'd split.