I'm not sure. My completely limited sense is that it could be pretty difficult to make drastic changes to entrenched language, given that cognition and language is very linked, and as Chomsky and others have argued, our brains have an intrinsic linguistic grammar that is common to all known human language. That said, I have only very recently started reading a little bit about linguistics and neurolonguistics, so I a barley know what I'm talking about here.