It's minor, but it would be nice to be able to drop the subject more often when it's unneeded, like being able to say "Raining" instead of "It's raining". Some latin languages have this, and would provide English with a bit of terseness. For example, in this comment, I used "it" three times before the first period, excluding the quote.

Also, I find verbs to be overused in English, whether for intent, desire, location, hypothetical situations or other stuff. Some extra adverbial suffixes would be a nice alternative.