Very nice writeup. The only thing that comes to mind is Jeff Schick's announcement this January "We are taking on the likes of google and yahoo" - well good luck with that. I also hear mail boxes are supposed to fix themselves, or is it watson who fixes them?
Also, despite a lot of people saying putting email solely into the browser is a bad-bad idea, they'll just go and do it anyway.
I'm disappointed yet not-that-surprised and amused at the same time.