I'm with you on that one. The only thing I feel that really needs improvement in javascript is the long-winded lambda syntax, seeing as they're used so much. Everything else I'm perfectly fine with. Honestly, most of what coffeescript brings is fewer keystrokes, at the cost of ambiguity. I don't see the purpose.

And I'm sorry, but whitespace-for-blocks really kills it for me. I can't stand it in python, but I'll suffer through it for the ecosystem. Coffeescript brings nothing to the table for me.