Paladin (Main): Mining + Herbalism (The Collector - I don't want to switch to another char each time that I see something on the map)

Priest: Tailoring + Enchanting (he disenchants the BOP Items)

Mage #01: Tailoring + Alchemy (he gets the herbs from the Main)
Mage #02: Tailoring + Jewelcrafting (he gets the ore from the Main)
Mage #03: Tailoring + Inscripting (Inscripting = new profession in "Wrath of the Lich King")