Your inexperience outside of the MS ecology (it seems to me) shows a bit, Deb ...

Bluetooth mice work fine with iPads.

Multiple user profiles are part and parcel of Android 4.1 tablet experience, and devices gain the capability as they move to that release. I haven't hear of any OEM removing that capability.

And stepping way back - to be honest, your experience doesn't read like a success for the Surface RT (imho) ... the number of workarounds to fundamental problems that you had to find was surprising to me. And you essentially conclude that the new Metro whatever UI is not usable, for your use cases - which I don't think MS would interpret as success, given their aspirations on the "we want our own walled garden" front. Objectively, am I wrong? That's not a surprising number of issues that you encountered? And note that all the TIKFAM/Metro/whatever issues may very well be in the Pro as well (though maybe not, maybe the x86 sandbox/libs will execute more cleanly ... TBD).