I envisage the creation of Language as an 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.