[BuckRogers]

The problem with the idea as I see it, is that it'll just tribalize again. You'd need to ensure that requirements are in place for learning and maintaining the chosen language, and prevent substantial evolution within it by any group of people. It's better for something like this to be a 2nd language, which is already in place for the world in English. The easy to learn and write part is mostly there, but getting someone out of the dark ages relies on them learning English. The real problem with maintaining language interop is that you have to practice it. It's infeasible to foist a new language onto the entire world, or choose one, rather than work with what we have. Money and knowledge are the only real motivators and English has it. Just as French did before, and Latin before that. Spanish, Chinese and Hindi probably also have a secure existence and always will. The rest are at risk of dwindling numbers and then extinction. So your wish has been coming true over time.