Thank you for your detailed and in-depth review. You've obviously spent a lot of time with an N7.
Although I think you might have missed a couple of things. In my comparatively short time with my N7 16g (couple of months) I have used it for the following:
Teamviewer/VNC/RDP remote control
FTP server for router firmware updates
Email (both Gmail app, and other IMAP/POP based systems using K9)
Catching up on the MotoGP via iPlayer (sideloaded flash whilst waiting for BBC to "sort their life out")
Much gamidge (okay, that's the missus - PvZ, All the angry birds, Bubble shoot, Draw Free, SongPop etc etc)
Beebroid BBC micro emulator - old scoolz! That's for me :-)
Radio when I'm in the bath via Absolute radio app
Showing semi-posted photographs to clients on the rather lovely screen (I do a sideline in photography)
It's been worth it's weight in gold when building PCs for referring to motherboard manuals when the original has been lost. No need to carry a laptop anymore.
Not to mention the old favourites of Skype (with video chat of course), facebook, twitter, and reading/writing drivel in the comments on El-Reg, with the swype keyboard.
Oh yes, I do have several browsers installed. Why? I've been known to do websites, so testing on other browsers is a good idea.
After all that, I've still got 10gig free, so I won't be rushing off to buy a 32gig when it comes out, although I might buy one for the missus.
Oh, and so far I haven't spent a penny on apps.