In fact, I wouldn't mind talking about something that I touched on above: RE: The SIZE of the upcoming PHB.
One of the things that I think is going to surprise people with these new Core books, is something that WotC has touched on in interviews, but we've only got a few small previews to give us a hint about how it's going to shake out. But here's what I expect from what we've seen and heard:
They're going for a bigger font, using artwork to space-out entries. Things like "each subclass has Art". The thing that I think is really going to stand out about this book (and Ditto for the other Core) is that, for the first time ever, I believe, they are not going to have text that drops off a page and continues on the next in the way that it has. They are going to lay-out the books so that everything fits. It's an organizational idea that will, IMO, VASTLY improve the books.
We've seen an example with the backgrounds. They showed TWO Backgrounds per page, with art that evokes said background (er, in the background behind the text). I expect each subclass to have its own page. Etc etc.
This is one of the things that I think might cause many of the folks who are posting "No" or "Wait and see" on the Poll thread about adopting these books... to change their minds. This is, of course, IF the books are organized as well as I imagine them to be. We'll have to see.