Language is what it is. There's nothing more "wrong" with English than with any other language. The alternatives are just pipe dreams for the foreseeable futur

Language is what it is. There's nothing more "wrong" with English than with any other language. The alternatives are just pipe dreams for the foreseeable future: a sterile engineered language like Esperanto or some other language with with it's own set of trade-offs. Millions of people just aren't going to do the work to learn yet another language unless they have to. If anything, ubiquitous machine translation seems more likely. However, if you MUST change the lingua franca to your native tongue, there's a simple prescription. Become a global super-power, assert dominance in all things military, political, and cultural. Make other countries your colonies and ruthlessly insinuate yourself into all aspects of their politics and culture. Keep this up for a couple hundred years, and viola, a new lingua franca.