Unless you really do something profoundly different in terms of type system, memory management etc, you're just making a new thing to learn and an extra nuisance to use if its toolchain sucks. "JavaScript but looks kind of different" doesn't clear that bar for me. We learned that from CoffeeScript.
I don't have any problem with people making languages for fun but to me if you're asking people to deal with the hassle of a new language it better be for a good reason.