Have to say I am with Jello on this one. Can't see the appeal and feel it will just make the gap between Have's and Have Not's bigger.
People have said casual players will still be able to pick up colllectables during quests and use those. The Have's can do this as well, and more often. Break it down a little bit. Substitute the collectables into gold for the sake of this argument. CP's can run around collecting all the "gold" that drops in their 3 hour session and come up with say 3000gp. The Power Gamers would collect 15,000gp in their session.
I am not begruding the powergamers their loot If they are prepared to put in the hours the deserve it but can't see how people think this will balance the difference between the two. A CP might be able to find the right things he needs to make the weapon he wants. As it stands they can run around collecting everything, sell it and might be able to buy the weapon they want. just as much chance of that as being able to find the right things to craft the item they want.