You brought up some excellent points and as always, wot was there with his extremely long, quote-filled posts to clear things up. You basically did an excellent job with your list and there is not much more I can say.
One thing I did notice, though, is the flash bit. I don't remember where, and I will try to find the source, but I do remember reading an update on this that mentioned for sure it will have Flash, but that the version is not yet known. I remember that it was linked on this forum, though, so if you look around, you might just find it.
For the iPod scroller thing, it is an interesting point and now that I think about it, this wasn't really displayed in the keynote. I can't see it not being in there, though, as everybody wants to rewind and fast forward. Come on, you can touch your music
Some of the things you mentioned are definitely possibilities, like the third party software. It has yet to be officially announced, and it is all speculation at this point.
Well, I am rambling now. Great job, and welcome to EI