Wouldn't it be nice if when a crafter pays for access to facilities, be it from guild, camp, or repair NPC, they get teleported into an instanced room containing said facilities?
So if they're at a camp, they appear inside a tent. If from a repair NPC, they're in a warehouse. If from a guild, a back room.
One of the major benefits of doing this is that you wouldn't have dozens of crafters clustered around certain NPC's, causing all that lag and the delay in the display of character models. Can I get an amen? ;)