I would buy the Surface RT all over again, there is no other device like that that I could consider for my needs, really. Except maybe the Surface Pro but the price and a few other things would still probably steer me to the RT.
I dont think Surface RT never really got a fair chance or then it's just a bit too much of a niche device that happens to suit just me perfectly.
I hope that regardless of the loss that the hardware formfactor will keep on living as will the build materials etc. I think iPads feel and look like toys compared to Surfaces. In a few years when I'd likely upgrade my tablet device, I hope to get just a new version of Surface simply cos nothing else comes close to how amazing package I think it is.
That said, I won't lose sleep if they can Win RT (as long as I get enough support and updates for the average lifetime of my Surface), as long as the hardware formfactor and general philosophy of the Surfaces keeps on living, even if only in the form of a Surface Pro (or likely cheaper models with those Atoms and other CPUs like that).