Thanks for your suggestions, Hpvpp. I can tell that you really care about this issue. But honestly I think it's a terrible suggestion. Structuring discussion of linguistic relativity around the Sapir-Whorf hypothesis on one hand and fictional languages on the other (with or without splitting) would be like structuring discussion of Special relativity around electrodyanmics on one hand and fictional space ships on the other. Yes, notions of linguistic relativity have been important in some sectors of speculative fiction, just as notions of faster-that-light travel have been in others. That does not mean that fiction plays a comparably important role in the philosophy of language nor in physics. As Maunus says, this article is, and ought to be, about the linguistic and philosophical treatment of various notions of linguistic relativity, not about their uptake in fiction, among creators of constructed languages, or in other creative applications.

A history of scholarship on language and thought may or may not be useful. I wonder (a) if it would serve as the sort of basic encyclopedic need of this project, or might it be better suited to some sister project such as Wikiversity or Wikibooks; and (b) whether such a history would be possible without original research via synthesis. In any case, it would be neither a replacement for this article nor a subsection of it, but a broader category that includes it.