I would probably like a weekly view for Calendar just to have it, but I don't feel lost without it... certainly easy enough to see the detail with the Agenda view, IMO. The inclusion of the To-Do list was a must though, and I'm glad they delivered.
I actually appreciate the fact that they don't FORCE you to use the integrated Inbox. I like my work and personal messages separate, but I appreciate being able to unify them if I so choose.
I could have sworn I read on their blog that they were including the ability to connect to "hidden" wifi networks... perhaps the next beta release, since they obviously aren't finished yet... Twitter/LinkedIn to come as well.
I'm still not going to teach my dad how to update his Focus, considering how jacked up AT&T is about their updates to begin with... doing the beta and having to roll-back before the official would be disastrous for him, BUT... for anyone with a techy background, this is as close as we're gonna get to a custom ROM for a while, lol.