Please forgive the delay in response; this message was inadvertently directed to my spam folder. Also, please accept my apologies for misspelling "Extremaduran" in my previous e-mail -- the brain thinks, but the hands type otherwise.
You've clarified your position well. I'm aware of the politically motivated movements in Spain which seek to "disintigrate" the language, as you say, hence my initial skepticism; I now see that you are not one of such people.
As I have already stated, I fully support efforts to preserve historic and regional minority languages, as does the project (albeit in a more passive way). Your candidate appears to be just such a language, and one I believe justifies its own Wiki. While I don't speak with any authority on the matter, I'm inclined to support its creation.