The feedback system for the exchange of meaning ensures constant pressure on language. In cultures where mass media saturation is high, these pressures are all powerful.
In cultures exposed for the first time, on a broad front, with another culture, these pressure are also powerful.
The only thing one can predict for the future is further elision of word and phrase length, because the process of mass acceptance of a shortened version of the meaning is now so rapid. You can't be me, I'm taken
Again, as long as the language can express advanced thoughts, how it expresses them is of no importance. All language, given enough vocabulary, can express those thoughts ; the "evolution" of language is never that a language dies because it can't express thoughts that another can, unlike biological evolution. There is no "fitness" of languages. Un roi sans divertissement est un homme plein de misères
