[2020] Pump shotgun spawn rate needs to be increased in Team Rumble

With the vaulting of the charge shotgun, we are left with just the pump and the combat. Before v14.40, the charge shotgun was part of the floor loot in TR, so players could find a charge and simply sidegrade to a pump.

This is no longer possible and the pump is not part of the floor loot, so the only way to find it is through chests or supply drops and even then they only spawn with purple or gold rarity at a very low spawn rate. Since the update, around 90-95% of my TR games have not spawned a pump shotgun, so I have been forced to use a combat.

So players have gone from having three shotguns to choose from to essentially being forced to use just the combat in TR matches. Note that this is only an issue in TR because pump shotguns are not part of the floor loot in this game mode.

A couple of suggestions on how this could be fixed:

1) Add blue/purple/gold pump shotguns to the floor loot in TR (not only in chests and supply drops) - This will ensure pump shotguns are still accessible to players without having to search 10+ chests to find a pump.

2) Ability to sidegrade between combat and pump - Epic should accommodate different player styles instead of forcing people to play a certain way.

I think 1) needs to be implemented anyway. There is no reason why a blue combat should spawn more frequently than a blue pump. Then, 2) would be a nice bonus feature that allows people to be flexible and play in their own style.