This was suggested to me by far_end_of_spectrum to put a new tribe to the mix

The Desert Tribe

Occupation: Raider and Robber

Allies: N/A

Description: Unlike the Bone Tribe, Sand Tribe are very sneaky and agile when it comes to robbing and raiding but are very economically resourced.

Hunt for: Only do business resources for trading and snake charming

Leader: Rashid

Location: 2 miles from the wasteland, West from Jungle, and East from Woodland