Apologies in advance for going OT on tangents:

I want a mostly-working device --- -open and -closed rarely figure in. I'd gladly have a closed-source device if it worked significantly better: Windows Mobile, I'm looking (vaguely) at you. Looking forward to my iPhone, too. :P

Things I expect to see:
Skype (wish I cared!
Better graphics performance (nothing major, but the YUV performance fix)
BT PAN support

Things I want to see:
Clear and simple ways to write replacements for the browser and e-mail applications
Clear and simple ways to change file association
Opera Plugin SDK

Things I doubt I'll ever see, but want:
PowerVR drivers
A media player a fraction as versatile as MPlayer
Working Orb
Fix for the bug where pressing the center on a popup link opens two windows
Speech recognition
Generic gesture API
Fully touch-based interface
Working e-mail (checkgmail is not a substitute, damnit)
Full port of wpa_supplicant so I can connect to my work/school networks
Actual implementations of enterprise WPA, not just GUIs
Significant hildon-desktop overhaul to get rid of wasted space
Fully working, entirely compatible, OS2007 on 770.

What I see in the 770 and 800 are largely closed operating systems: closed either literally, in the case of the drivers, or figuratively, in the case that it's so byzantine or poorly documented that it may as well be closed.

We are 100% dependent on Nokia to fix the browser and e-mail: we can't swap them out, and we can't improve them (I'm reasonably happy with the IM client, so it gets a pass here.) It's just as closed to me as Windows Mobile.