Recent studies of Y-chromosome and mitochondrial DNA haplotypes have shown that most of the genetic heritage of the British Isles is from an ancestral Atlantic Coast population group that includes the ancient Iberians, the Basques and the Atlantic-coast French. Anybody who wants to restore the Germanicness (or Theodishness) of English for racist or xenophobic reasons is actually fighting for a seriously ill-conceived cause. In any event, the Anglish movement is not in any danger of taking the Anglosphere by storm. All in all it seems to be harmless and somewhat interesting, if a little eccentric and esoteric.

I am originally from East Texas and I use "might could" from time to time. The original poster seems to think you would use the phrase in the sense of "Maybe I will, maybe I won't." Actually you (or at least I) would only use it in the sense of "Maybe I will be able to, maybe I won't."