No one should fault people for rolling need on frozen orbs at this point in the game. They have new value. Technically, we all can use them. Frozen orbs are directly convertable into some better cash items. While the items you can buy currently with frozen orbs on the PTR are not set in stone, and their costs are subject to change, we know that they will be useful.
Two different solutions to the frozen orb situation present themselves: 1) Blizzard removes the need roll from frozen orbs so everyone gets a chance to get the orb or 2) change the behavior of the populace and everyone roll need on frozen orbs and educate the masses on the new, impending value of frozen orbs.
If you've ever been upset at a random pick up group player rolling need on a frozen orb, you have a weapon to fight it -- just roll need, and tell everyone else to roll need as well. Do everyone a favor and educate -- let people know frozen orbs will have a new place in the economy. Now you've got a random chance for frozen orbs and of avoiding the end of instance standoff.