I read the thread you mention and I am actually one of the people who spent $45 on that book and did find it useful to get faster at Sublime Text.
The ideas I am considering would address the needs of a subset of JavaScript programmers - specifically ones doing work with HTML5 Canvas API. There are some books and resources obviously, but none I would consider very good. My inspiration here is the quality of work of Jon Duckett - http://javascriptbook.com - great content and exceptional design!
So, I am looking for the estimate of JS programmers in order to estimate a small subset that would enjoy high quality Canvas graphics programming content...