It's kind of funny. ES6 seems to be making JS more "Python", while "strong mode" makes it more like Java/C# (at least to me). I'm open to worthwhile changes; I'm just thinking about the tens of thousands of lines of JS I've written with various utilities and libraries, and how they will eventually fit into ES6...I'm not too sure about strong mode, though. I guess we'll see how it all pans out.