As someone with 200 or so games under my belt, I didn't really think this stream was very helpful for someone just barely coming to the game or who has never watched it before. SUNSfan (among one or two other casters) was using character names from Dota 1, and still talking about things from a pretty high level. Maybe I missed it, but they didn't do a lot of explaining about what the safelane is, what it means, why pro dota players run trilanes and offlanes, etc. which is a concept that even after hundreds of games I still don't quite grasp.
Hopefully the stream improves as TI4 continues but, at least to myself as someone who has played enough dota to gain a passing familiarity with almost all the heroes and items, it seemed like it left a bit to be desired from an educational perspective.
It's hard to tell though, because I do know the basics at least. I hope to hear Patrick talk about what he takes away from this throughout the week.