A positive in some people's minds, a negative in others, the fact that Bind on Pickup loot from dungeons and raids is now tradeable for two hours after being looted is a big deal whether you're for or against. Much like the "buyback" feature added to items purchased with Emblems in patch 3.1, in patch 3.2 when a Bind on Pickup item is looted to a player that player has 2 hours to trade it to someone else. The conditions are that the person it is being traded to must have been eligible for the loot in the first place - meaning they must have been in the group when the boss was killed and looted.
A lot of players like this feature because it allows time for bartering to happen in PuGs without taking up the time of the master looter. You can win the item, then try to sell it off to other players while the raid continues on. The negative side of this is it creates moral dilemmas. Players who many not be planning on using an item might try to win it for the purpose of reselling. Groups consisting of mostly one guild may all try to win an item just to give it to a guildie. The problem is that all this can happen without anyone ever knowing they're being scammed or ripped off.
I, for one, am happy at least that I don't have to fight with GMs anymore to have mis-looted items given to their deserving recipient, so this change makes the top 10.