I like all the new information that was added.
I'm not particularly good at writing, so I'm not really one to talk, but I kind of think that there's way too much detailed information in just the first introductory section, and too little information in all of the actual sections. Perhaps information should be shifted around a little bit?
We definitely need to elaborate on the actual languages, and I think there are many people here willing to do it. Go for it!