To me, the issue is not so much the lack of documentation as with the misnomer that the coin is some kind of "prize." In actual fact, you are asking the FTF to do you a favor by moving your coin. What a treat for them.
You say that as if it were a bad thing. I do see your point and, perhaps having the mission page with the coin will allow the folks who see it as a bother to leave the coin alone, and will allow the folks who actually see it as a treat to take up the mission. Thanks, Hud