In what world does rewarding the support with 1000g and everyone else with 37g make sense?
The enemy top lane or jungle is snowballing out of control with a 1000g bounty and takes your entire team to kill, but your support, let's say Soraka, just happens to get the killing blow. The Soraka walks away with 1000g and everyone else gets less than a cannon minion for the assist.
End result is that the bounty is basically wasted. With the current state of the game revolving around doing as much damage as possible and one shotting the opponent before they one shot you, giving all of this gold to Soraka does nothing to help your team do that. This does absolutely nothing to help your team catch up.
This aspect of the bounty system is complete nonsense and should be reworked before the next season starts.