While personally I have no problem with people inventing new programming languages, I think that with es6 something like 80% implemented in latest firefox and chrome, expected to be properly finished this year and with good transpilers already in use, there's a really strong case for anyone who would otherwise be transpiling anyway to look at es6. Just yesterday I was seeing how far I could get with gulp and traceur: https://github.com/kybernetikos/gulp-es6-template