Here's my take on it at 1:30 in the morning.
To me, Neo-Tribal Metalsmithing entails:
1. High quality craftsmanship with an emphasis on the use of forging to achieve the final goal. This doesn't mean that all of the blades have to be forge finished; but it should be distinctive from a ground-from-a-bar stock removal blade.
2. Heavy reliance on hand skills and muscle powered tools more so than upon machine skills and power tools. This doesn't necessarily mean that you never use electricity or propane (although if you want to play by those rules, you may and proudly proclaim so); it does mean that if for whatever reason the power went off and the supply chain broke down, you'd be able to make a few adjustments and keep on banging out useful tools like before. Remember: After the Russians nuke us back into the Dark Ages and the rest of the country is under the iron grip of the Amish overlords, we blacksmiths shall be free!
3. A tendency to make use of recycled and natural materials.
4. An indefinable aesthetic that evokes a sense of other cultures than 20th and 21st centruy America. 1830s fur trapper, Filippino head hunter, post-nuclear barbarian, lost continent of Lemuria, alternate universe where the Mayans learned to smelt steel, alien warrior, all good. The tendency is toward a more primitive aesthetic, but refinement of form and finish are good.
Within those parameters, the field is pretty darn wide open. Go play!