When CoffeeScript came out, i thought the course of action was obvious: Never update the JavaScript language again, and update CoffeeScript and similar language

When CoffeeScript came out, i thought the course of action was obvious: Never update the JavaScript language again, and update CoffeeScript and similar languages. Just for the sake that javascript will have to be backward-compatible for ever it seems such a bad idea to change it at all, except maybe for thing that make it a better compiler target. This is of course not what happened. Stories like this make me think that this is what should have happend, tho.