Completely agree.

One way to handle it would be each chest having a 100% chance to spawn, but decreasing by 12.5% for each member who cleared that week. In addition, if you've cleared that week, you're ineligible to roll on loot. That means the more members who have the clear, the less chance of loot for the remaining players.

Savage was not "intended for statics" either. Statics are a player designed system to compensate for how incompatible Savage is with FC's and DF in its current form. There's nothing to lose from letting players help friends and FC members out if it doesn't affect the speed of loot acquisition.