> I'm more concerned that twitch.tv is already good and has it's own culture developed for this.

Twitch is ok, but it is against ToS to stream non-gamedev programming. These rules aren't enforced strictly though.

VOD support for twitch sucks. Personally, I prefer my videos not getting deleted after 14 days. So that's why I stream on youtube.

As for the other stuff, we have a few ideas(most of them vague). One of them: auto speeding up "boring" parts of videos(e.g. silent thinking) in recorded videos.