Or they have far more faith in the community than the community deserves. MOST groups I see usually pass on stuff they don't need, but then again you get those needing on everything just because they can. I guarantee if people could need on a token they could not use, even if there was no one else to pass it to(either a friend or a guildie) they would anyway because they can.
The new system is actually great and I hope it is implemented in LFD. I found out that if I need on ret boots when I am in holy, my roll doesn't get the bonus anymore. Good. It encourages people to use their OS more often.