What Party-in-progress is for: Marking yourself as available to help out in an unfortunate run where a member has dropped or been kicked. Being a helpful member of the MMO community.

What Party-in-progress is not for: Fast, easy loot.

What change duty finder really needs: No warning that the group you're about to join is actually a starting group, not a party in progress, and more severe penalties if you withdraw. In signing up for Roulette, you are declaring yourself to be willing to help out others in need, and are even receiving a generous reward for it. You are owed no further favors.