Just an idea that came to my mind...
New guild: Shamans
Maybe just a 25 lvl or so guild, comparable to civmages,
featuring some very low level spells or cantrips or
shamanistic rituals. It could bring some much needed spice
to an otherwise so monotonous background, and shouldn't
probably bring up too many unbalancing issues. Shamanistic
practices are closely connected to nomadic tribes, and
wouldn't be out of place, I think.

I think this would be something worth considering, if
not, ignore this as a mere newbie's rambling.