If it can:
- run local java and/or dalvik (android) apps
- hand off to another OS (like splashtop OSes do) when you need a beefier environment (kind of like a button for "Boot to Linux" or "Boot to Windows" or something)
- has a touchscreen oriented OS, like Android (including screen rotation), only re-optimized for the larger screen
- runs full/desktop versions of google apps, instead of the mobile/phone versions that Android is limited to
- has support for 3G cards (external, internal, built-in)
Then I'd love to see this on convertible tablet netbooks (EeePC T91, EeePC T101, Fujitsu Lifebook u820, etc.). I'd be VERY interested in runing this OS if it does all of that.
But ... the Java or Dalvik apps are a key. If it's like the iPhone 1.0 (web apps only), I think it wont succeed. They'll need SOME form of local apps (just like the iPhone had to add, Android has, etc.). Running a re-optimized form of Dalvik would be pretty ideal, in my opinion. But having a generic java engine might be appropriate too.
Without those things ... not interested. I'll stick with Ubuntu based netbooks. Or wait for Apple's offering in that category of devices.