I still have some usability concerns with the dpad/button-cluster placement on the N810. I'd like to see something like my mock-ups, with 2 dpads arranged in the center sides (or upper sides, like where the N800 dpad is) and the camera and light sensor above the screen instead of to the side.
The things I think are "Must Haves" on the software side: Calendar/Todo app Sync app for contacts, bookmarks, calendar, todo with all of the following desktop/server based counterparts: thunderbird/firefox/lightning/sunbird Apple addressbook and iCal perhaps via iSync compatibility Google Apps (maybe Outlook/Entourage) Full IMAP client (can read all server-side folders, can use the server-side inbox/sent/trash folders instead of local ones, automatically syncs all IMAP folders when checking for new messages) Bluetooth PAN support (in addition to Bluetooth DUN) Fully supported integration with Bluetooth Hard drives, NFS, CIFS, WebDAV (windows "web folders"), and Apple File Share volumes. Support for Socks 4 and Socks 5 Proxies in the Configuration wizard (in the same dialog where you specify HTTP, HTTPS, and other proxies). Support for password protected proxies. Gmail Notifier should support logging into Google Apps hosted gmail domains, and not just the main gmail domain. (it notifies just fine, it just doesn't work when you tell it to go login)
(you'll notice I don't mention any media device oriented stuff; I don't use my NIT that way ... I wouldn't object to having faster video frame rate support, more codecs, etc. -- just didn't include them because they aren't on my radar)