Vote kick before the final boss? I assume a partial FC premade where someone is being guaranteed the Oil drop so they vote kick the randoms at the end? Kind of silly for a drop that isn't guaranteed.
In any case there isn't much the devs can do. Vote Kick is working just fine and the limitations are there so people can't be even worse trolls and kick people after the chest pops or right near the end of the boss fight. What you guys should have done is asked the other allys to hold up a minute so the loot could autodrop. If that loot is still in the pool after a trash pull there's likely only a minute or less on the timer anyways.