Considering there are probably many thousands of developer hours invested in this, I hope Fog Creek invests ten or thirty hours into making some quick and dirty youtube videos showing starting from scratch and building out a a few full apps with persistence, some integrations, etc so we can see what that involves. I still don't completely understand what GoMix is exactly from the video shown here.
No, please, not a video — this is the most inefficient way of conveying information about a product aimed at developers. Just write a well-structured text tutorial.
Honestly I would like if they did both. Sometimes I like to just listen to videos while I'm doing other things and sometimes I like to be able to just skim through an article.