Yeah, I don't think that sounds like a good idea either. Failure due to getting kicked in the balls by RNG is not a good design. I love the idea of having to work towards something really extra special and having to put in a lot of time to get it, but it absolutely needs to be in reason (which this is not). That being said, I think they should take a page from WoW's post Wrath of the Lich King legendary handbook for this. While it does require a lot of gold, time, and a good guild, the effort in the end is usually worth the reward.