Believe it or not but there are some people new to the game who don't have a clue what a DR weapon even is.

Asking people to link a DR weapon is a nice tool that can help you gauge the experience level of the people you have applying to your lfm if you are unfamiliar with them. That's going to give you some idea of those who might need help with puzzles or who might require a bit more explanation than others.

Proper planning usually prevents poor performance.