I would seriously love only one additional function for an iPad and that would be the ability to watch videos whilst working on other things (sending mails, web surfing, etc). I really think many would make good use out of it. I'm not an avid movie watcher where it's all about deep concentration and no disturbances.
I saw this feature on my computer, that's where Samsung got the idea from.
Samsung's implementation doesn't share almost anything with a computer. It is a limited experiece aimed at getting the most usability out of a tablet screen. They most certainly haven't got that idea from a computer, unless you can show me where there are permanently floating windows and a screen completely filled by two applications' windows.
I often have two application windows maximized to fill the total screen. The only thing different from that is Samsung locks them into place. Its a logical use of space, and a good implementation, but having two Windows open is not a new concept.
Lets also remember than this is not a Google invention. Cornerstone came first, then it was added to TouchWiz, and then Google embraced it.
Samsung's implementation has proven the most succesful so far. No point in discussing merits of previous adopters here.
Depends on how you define successful. If there are more Windows 8 devices (tablets, laptops and desktop computers) than Samsung devices then Samsung does not have the most successful implementation.
I don't see how Windows 8 for laptops or desktops is of any significance here.
As I stated twice now , Samsung's implementation is not found in PCs. And it wouldn't be of any use, since screens far bigger than a tablet's are used.
If something like this were to be done, wouldn't all app developers need to write special code into their apps to allow for another app, a video app, to take up screen space from their app?
Unfortunately I don't see Apple allowing any sort of APIs that would give you what you're asking in the near future.
You may want to expand a bit and look at other platforms that may fit your needs better.
You said Samsung's was the most successful without qualifying what defines most successful. If its the sheer number of devices, then if there are more W8 devices, Msoft's implementation is more successful.
If you're discussing which is better, that's subjective and can't be correctly determined unless you have used both.
Wouldn't it rather be a UI (iOS) development instead of each app developer writing something for their app to allow a pop up video to take precedence? Samsung's pop up video takes precedence of over any app, Samsung standard (text message, GUI, contacts, etc) or third party app developers.
The good news is that you can buy a cell ready iPad, not sign up for service, and use the GPS functionality for free.