Hell yeah, I have an insight. I think most users don't really need all those fancy HDMI/whatever video outputs. It's phone, forgodsake! Let's abandon them to keep a price tag and instead include a small video projector (fullHD, naturally). There is a small list of some other features, that Neo900 really needs:

1) screen should have a mirroring effect when turned off, for use by ladies and those paranoid schizophreniacs who would like to check that there is no one behind them when they are about to type their precious passwords.

2) it should be posible to use phone as a remote mouse or touchpad, say to turn pages during a presentation (I mean there should be some easy PnP way to do it, without involving a command line wizardry).

3) I expect it goes without saying that the phone should be water, shock and heat-proof.

4) but in the case of emergency all phone memory including sim cards should be securely erased or physically destroyed.

5) it should be possible to insert a small fan somewhere, that'd be nice during hot summers or rush-hour subway rides.

6) inside the phone case there should be a holder for sticky notes, also the rear side of keyboard when expanded might be used as a holder for small paper notebook, visiting cards, credit cards or whatever.

7) flashlight. I guess, N900 probably already has one for the cam, but it would be nice to have an additional dark UV flashlight in case you ever feel like going scorpion hunting or just to check money for counterfeiting.

8) one side of the case should be a bit expanded to incorporate magnet card reader/writer, and at the same time it should be possible to use it as a portable paper shredder.

9) 1W laser pointer. Useful during presentations, handy if you ever get a girl and want to show her constellations (or just show off), nice if you meet another adolescent boy with whom to play Jedi.

10) Btw, laser pointer should be aimable, so that the phone is able to do retinal scanning/iris recognition by its cam and shine a laser at the eye if the person being identified isn't the phone owner. It should be possible to use laser for a small laser show as well.

11) Phone also should have a built-in taser or maybe a stun gun to be used for self-defense and as a theft-prevention system.

12) solar panel built into a rear cover in case you ever get stuck in the desert.

13) spinning reel for fishing in case there is a river in that desert you just got stuck.

14) vibration motor should be powerful enough for the phone to be used as a shaver (obviously a special cap should protect the razor when it's not being used).

15) swiss knife - you can't go wrong with this one.

16) on its base the phone should have two wheels so that it can stand up during a call and navigate by using camera/proximity sensors to face and approach you.

17) of course the phone should be controllable by any standard radio system used for amateur r/c aircraft.

18) case should (optionally) change the color chameleon-style. I have no idea, why anyone would need this one, but it sounds cool.

P.S. I expect that you will totally appreciate those valuable ideas and send me a working model once they are out for early testing, 'cause I obviously could easily sell all those (and many more!) ideas to any of your numerous rivals (like Palm, Inc, Valve Corporation or Apple Inc)!