I envisage the creation of Language as a area of study. And so at school you might do Maths, English, Science but now also a subject called Language (in the singular).
Languages like English, French, Japanese would then belong to the realm of Applied Language.
'Language' would consist of what?
In my opinion, general principles, acquisition methodology, and blue sky research based upon the thinking of people Stephen Krashen, Frank Smith and several others.