Why can't they just make it like daily roulette rewards, except weekly? That is, only your FIRST WIN OF THE WEEK grants you the bonus rewards (the loot). After that you are free to carry on playing but, for the rest of the week, you don't get that weekly first time reward (the loot). So you're only getting a chance at loot on your first clear, but you're allowed to continue to enter to help out your friends and linkshell and free company etc.