I do not find the ipad interesting as it is right now, however it does have potentiel.

This would be something close to my ideal Ipad that is possible.

- Use a real OS
make it use a real OS (even if stripped down).

- Use the bezel
Even before I saw that apple recently put in some patents to use the bezel with touch sensitive buttons,
I thought that they could extend the screen but only put a dock or command keys or use touch stuff like volume, zoom, mute, shortcuts etc..
A nice example is the volume bar on the logitech dinovo edge. These buttons could be activated with a physical button or on screen as to not interfere with the normal operatons while holding it.

Another idea would be to extend the lcd screen, not make it touch sensitive but put information that would be useful.
For example : pop ups, alerts, batterly life, time... leaving the touchscreen less cluttered with more space for the main program in use.

- bluetooth that is not gimped
I hope to be able to use a BT keyboard and a BT mouse (at least until they have a BT trackball) without any problems.
Tethering would be nice if you cannot use a cable.

It would be quite nice during the day when you are out and about to use the ipad when traveling.
You oculd load maps, guides, you own notes, have internet connection (you have to admit that the iphone/touch screen is small).
Once back at home, the office or hotel room use the keyboard and mouse for real productive work.

- wacom
Using fingers is fine, but to use a pen as well would open up a lot of possibitlities. Be able to switch off multitouch when using a pen so I can actually write.

- SD slot and at least one USB port, hdmi out with a vga or dvi adapter.
So that I can quickly and easily put my photos on the tablet, back it up to an external hdd and review the jpegs (or raws if possible) with pertinent info (histogram etc..). Makes notes, modify or indicate changes to make directly on the photo, add some text and add a geotag...Even better would be to use the screen as an EVF or at least be able to use it as a remote.

- virtual keyboard where one could type fast with one hand.

I would love to go travel with this in hand. Right now though, I d rather use my tablet pc even if the screen isnt as nice, it is heavier, autonomy isnt as good, can't use fingers.
So what I want I guess is a small mutitouch capable tablet pc with a nice screen but no keyboard, it does not have to be powerful either.