@above, I heard that the apple bluetooth keyboard is compatible with the iPad on some website.
Here's my list:
1. Multi-tasking. I know Apple doesn't want to compromise performance and battery life for superior user experience, but it should be up to the user. Maybe have a limit, 5 apps? Sorta a compromise.
2. Wireless Sync. Someone mentioned it above. It's really troublesome to sync my iPhone currently especially when the updates of apps comes trickling in and when I add new music. It'll be great for wireless sync. It can of course be turned on and off, and probably a notification system would be good so users can confirm before updating apps. A MobileMe-esque interface can be used, with a cloud based system that always updates to the latest version no matter where you edit it, on the Mac, iPad, or iPhone.
3. Induction charging. It's cool. And it's just so perfect for a device like this.
4. Secondary Display. This is probably coming with iPad 1.0, but they should allow HD video to be played on a larger screen, local videos and YouTube. It'll be great to have certain apps run on the secondary display too.
5. More OS X-like. Not full OS X. OS X was not designed for tablet computing, and it'll be like Windows Tablet PC if they just made some minor adjustments, add handwriting recognition, and slap a new name on it. A compromise. It must combine the interface of the iPhone OS and the compatibility and freedom of OS X.
6. Handwriting Recognition. iPhone already does Chinese, why not? A capacitative stylus could be sold separate, more money for them.
7. Connection beyond the dock connector. USB ports, SD card slot, a way to transfer files to the iPad without a computer. There could be a central storage system like the Photo Library, where all the apps can access the files.
8. Flash or HTML 5. Either way, the ability to view flash videos on the iPad.
9. Options with more ram/faster processor, etc. Ability to configure your iPad to your specifications and needs like how you would configure a mac now.
10. front facing camera for iChat. I don't really see the need for a back facing camera.
one more thing? Lose the bezel. Or maybe add some kinda gesture area.
Overall, i'm quite happy with the iPad. I know some people are disappointed following all the hype with the device. I like that this is not some tablet PC device, which is basically a touch version of a normal computer. This OS is essentially what a tablet should be, something that is very touch-friendly, intuitive, and made for multi-touch.