I would love to see some apps better integrated - basic stuff like calendar and todo (BTW check out http://drive.google.com/keep - it's a rival to Evernote)

That was solved and properly done tens of years ago on the palm. Why can't I have something at least as good right into the browser, synced with my google account??

(Edit: not the wrong place since you already do your mail with a browser... and keep your contacts... and your todos... just remove the middleman, the website, and put everything in the browser. My guess is end users might love that)