It all comes down to how it is decided to divide the forums, and what we mean when we use the word "traditional".

One thing to note is that even the high-end highlander wear stores call their hand sewn, 4-yard, wool kilts "casual kilts".

Perhaps it is the names of the two forums, one being "traditional" and the other being "contemporary/non-traditional" that sparks the problem.

We could change the name of the "traditional" forum to "tartan kilts",
or we could have three kilt forums: "contemporary/non-traditional" (referring to solids and camo-kilts), "traditional" (meaning totally traditional), and something like "tartan casuals" (referring to tartan kilts that are not ultra-traditional, i.e. wool breacan's and pv kilts)