I want to install application on it that have not passed the "Apple Gods" crazy rules that stifle innovation
[\quote]
I'd actually like to be able to install the apps of my choice also. So I only disagree with you in part, because I don't see any stifiling of innovation on app store. The vast majority of problems lye with developers not reading the licensing agreement or ignoring what it says. It is safe to say there are thousands of innovative apps on the app store. Some of those apps are there because of Apples policies which support the developers.
This is not to say app store is perfect. Far from it but considering the rapid growth of the store it isn't that bad.
You may want it to be OS/X but I kinda doubt that is what we will get. Rather I see a derivative of iPhone OS, that is a superset that maintains 100% compatibility and performance on limited hardware. Considering iPhone OS came from a canceled tablet project, the likely ARM hardware and other considerations I think Mac OS is out.
As long as they don't lock the unit down to the same extent as iPhone it will be OK. Like you said file system access is important as is the ability to install apps outside of App Store. However I very much want an App Store as it is certainly the best feature of my iPhone. Ideally the tablet would have a built in scripting platform ( Either Ruby or Python) that would provide for user programs and access to software and hardware features of the tablet. If for example the language is Ruby it needs to be a first class element of the OS.
Thanks
Dave