This is what I was originally thinking...

Paladin: Engineering / Leatherworking
Shaman1: Skinning / Leatherworking
Shaman2: Mining / Leatherworking
Shaman3: Herbalism / Leatherworking
Shaman4: Enchanting / Leatherworking

BUT, I just read that Drums will have their radius restricted at first and then Greater Drums will be available in Phase 4 Zul'Aman.

Is this Drum overkill? Should I have the Paladin take Blacksmithing instead? One Shaman take Tailoring or Alchemy? (But I'll probably have Tailoring on my Main)