@figbash (and to a few others on this thread) Why is the natural evolution of language depressing. Just because it’s not the English you grew to know and love does not make it any less of a language. Keep in mind that many of the languages we consider “beautiful” and “complex” came from Latin. All these languages (ie. Spanish, Italian, French etc.) are “badly spoken” Latin.
To say that what is happening to English is “horribly casual” and “depressing” is to not acknowledge that languages are a living mutating “thing”.
@Samurai (and others who think English is bound to dominate) Only a few years ago this was said about French (ok many years ago, but as far as language is concerned only a few). The majority of the “developed” world spoke French as a second language. If you have an American passport it is still to this day written bilingually in French and English. English will come and go, it’s just the way it has been. Until, as a united people of the world (if/when that happens), we pick a world language for easy of communication.
As for what are some of the things that will change in English (original question ;-)
The cot-caught merger will continue to spread through America. As will probably the father-bother merger, and possibly the pen-pin merger (starting in California). So most likely we will have fewer vowels, something like 10, maybe less. But there is apparently a vowel shift happening in California that is adding diphthongs where there “shouldn’t” be, so who knows we may get a few more back.
Also I think we will most likely drop the adverbial ”-ly”. It’s already starting to happen. “Drive Safe.” not “Drive Safely.”. Also the complete drop of “whom” has more or less happened. Give it a few more years and I think any remnant of Germanic accusative cases will be lost (me, us, them, him, her) will become nominative, and we will loose the distinction of case. “Me and him went to the store”. “Me and you told her”.
Also the irregularity of the copula will become more regular. “We be, you be, I be” Or something similar. And most likely marking past tense with the word “done”. “I done told you” or possibly loosing the need for the past in “told” there by making the sentence “I done tell you”. This and much more are possibilities we have looking forward.
That being said, this all will take more than 40 years, and more complications may also creep into the language. Languages are fun, not depressing ;-)