Some people simply have little imagination as to what useful could mean to some users. For example, I store ALL of my scanned family photos in my iPod Touch (currently at 4000+ and counting). The ability to show some friends photos on a wall at their house in a dark room instead of a TINY little screen that's on the Touch...well that would be a cool thing indeed and far from useless as some suggest. If power drain is a problem, I tend to carry an AC adapter for recharging while traveling. Certainly, it would not be a problem to plug in an iPod Touch at someone's house, for example. One cannot rely on the internal battery alone in a product that doesn't have a changeable battery option and that seems to be the Apple is going for all their mobile products (personally I think it's stupid to do that, but then Apple does all kinds of stupid things all the time). A projector could be even more useful if the device weren't an active participant in operations (i.e. you move the thing and the display will vibrate at worst and move all over thep lace at worst). Hence, a plugin projector unit that is not directly plugged into the unit (i.e. have a cord or wireless transmission pod) is probably the best solution since it would allow you to move the iPod Touch or iPhone without disturbing the picture and it would then allow for a much larger internal power source.
If Apple wanted to add something truly useful to a future iPhone/Touch, they should add an IR transmitter. This would then easily allow an iPod Touch to function as a truly universal remote, operating on both WiFi devices like the AppleTV and Infrared ones like home theater receivers. I use my iPod Touch to control my whole house audio/video system. To be able to use it to control EVERTYHING in my whole house audio/video system would be sweet indeed and with the touch screen, it could easily be customized for any of your remotes in terms of layout. Of course, that's not the only thing I use it for and when you compare the price of high-end touch screen universal remote controls, it's actually quite reasonable for such uses even if you don't use it for music, movies or Internet.
I still don't know why Apple hasn't added the ability for the iPhone/Touch to act as an AirTunes device and be able to either stream music from your local house library to the device (so it doesn't have to store everything on it while your at home) or send music to other Airtunes devices directly from it to devices like AppleTV or the Airport Express, thus functioning as a wireless transmitter to your hub station. True, Apple wants to sell you a docking station, but in essence an AppleTV becomes the docking station as it won't work without such a device in that regard so Apple makes another big ticket sale to boot. Apple seems to have lost all imagination when it comes to little things like the above or perhaps they simply want to hold back such features for years to come. Otherwise, why would anyone ever buy a replacement (other than the battery issue which costs almost half as much as some new models).
