Killing a Demigod nets too much gold
Most of the ragequitters are quiting because they feel like once they die, they have basically handed the game over to the opposing team. And to be fair they are partially right. It's a huge advantage to get a big gold infusion at the beginning of the game.
Half the amount of gold a Demigod gets from killing another Demigod, and make the 2nd and 3rd mint upgrades worth more. It would stop a lot of rage-quitters bailing out and make for better games in the long run. Skillful players are still gong to win and still going to get better items, but at least the opposing team won't give up after a death or two.