"So why not create syntax that catches 99% of the cases for which you intend the language to be used and abolish the ability to create further syntax?" Because

"So why not create syntax that catches 99% of the cases for which you intend the language to be used and abolish the ability to create further syntax?" Because then I've got a syntax that works for 99% of the use cases you've already thought of, and that doesn't overlap very well with the use cases I have or that either of us will come up with in the future.