Because of the progress in technology which translates spoken and written language in real time, I think, in the near future it will become less and less important what language one actually speaks.
But of course, there will still be some languages which will be learned and spoken much more than others.
I kinda hope the next superpower is some African nation. It would be nice to see people in Africa to overcome their ethical conflicts and all the other late aftermaths of the colonial age and starting to really thrive. Also interesting it would be to see African culture to be molded in (a different) modern lifestyle as we saw in “Black Panther”. That was cool.