They should stream it live for the many who want to see it right away and then post the keynote later on polished the way they like it. Most ppl who are hardcore enough to want to watch the keynote don't care about the editing they want to see it live. The one's that could stand to wait likely don't care to sit through a 2 hr presentation. They'd just rather see the couple minute video or look at photos or ads.
Yeah, I can agree with you on that, I'm just saying why I think they're editing, not saying I think they should, because I agree wholeheartedly on that point!