A3 - needs a hacked up version of oclock, xdaliclock, or similar.

The changes needed are to tell the WM it's always on top, non-decorated, etc.

Actually, I think it may be possible with no hacking, using wmctrl to tell the WM the same stuff. I may look into this, as it's an interesting project for me, too.

A4 - I was thinking it's possible to set up the N800 (I assume similar for 770, at least with OS2008HE) to receive BT automatically; I know openSSH/sftp will suffice, as I do that routinely on mine; ftp is unsecure, so unless your wireless network is trusted (i.e. WPA) you want to be very careful setting it up right.

A5 - Not sure that is needed, if you're running OS2008HE; at least in OS2008 on N800, that functionality is now built-in.