[Orestes]

I think it sounds like a great idea. ^_^

I tried to start up a healer's guild (Healers, Herbalists, Potion Makers, etc.) in Tarlach, but I guess it was too specific because there was very little interest. Including healer types in a production guild though seems like you'd have a good mix of people, and just about anyone could join.
I had also considered healers-for-hire, and I think that having good guild rep is key for 'advertising' as it were.

Good luck getting started up!