Everyone in the party places a 15 ecto deposit with the party leader (obviously must be someone of impeccible integrity who everyone can trust). They forfeit their ecto deposit if they refuse to give an item to the person they are supposed to give it to. After 3 full runs, each profession is likely to have 2 or 3 green items from bosses of their profession. The deposits are returned at the end to everyone who played by the rules, but the warrior only gets 6 ecto back and the monk only gets 12 ecto back, and everyone else gets 18 ecto back (so 10 of the warrior's ecto are "paid" to the rest of the party because his drops are deemed quite valuable by the market, and 5 of the monk's ectos are distributed to the other members of the party because some of her potential drops are also quite valuable in the market. Essentially, the warrior gave 2 of his ecto to every other person, including the monk, and the monk gave 1 of her ecto to every other person, including the warrior.)
In essence, everyone has given security that they will play by the rules, and in the end they get everything back, except the warrior has "paid" around 72K for a pretty great shot at getting 1 or 2 items that will be valued at around 150K or more by the market and another green item that won't be valued as well (maybe a hammer or common shield). The monk has essentially paid everyone else 24K to come along and have a pretty great shot at getting 1 or 2 items valued at around 50K by the market and another green item that won't prove as valuable. Everyone else gets paid around 24K for a great shot at finding 2 or 3 items that will be of use to their primiary profession, or sold on the market, but not for that much money.
So, if anyone wants to farm with me for green items, I've decided that this is how I am going to do it (first time I have ever considered farming for something in my life): I will assemble a party of six people, one from each primary profession in the game, and we will clear the bosses of grenth's footprint and sorrow's furnace. Here's the only catch: if a green item falls, you have to give it to the person who is of that profession. The willcrusher goes to the mesmer primary in the group, the monk gets that yakslapper, the tank picks up that sword or axe if it falls. If someone drops out, and the item was for his or her profession, we will just let it stay with the person it was "assigned" to. Anybody like this idea? Anybody hate it? Anybody want to come with me on my first ever farming expedition in all my time playing Guild Wars? I'll probably do it this weekend.
The players can then trade stuff or sell it in town or whatever, but the original assignment is for the class you brought into the furnace, so if you want something specific, you better bring that profession to join the group doing a 6-person LBS loot share.

~ Lady Blue Steel