Cool, they've invented Megarange. Looks like a good idea to me tbh, sensible approach. SRAM want to keep the benefits to people buying expensive groupsets and Shimano don't want to support 1x10 since that amounts to admitting they've been owned by SRAM so we're probably not going to get a mainstream option, this looks like a good alternative to the General Lees etc.
Incidentally if anyone really wants a bailout gear for their 1x10, here's what to do. Get a thick/think chainring and a clutch, and go with no chain device. Now, fit a granny ring. It weighs nowt, and the only way to shift into it is to get off and move the chain by , so you'll not be tempted to use it all the time but it's there when your legs give out. Ta da!
(it has the extra advantage that it'll infuriate people on the internet)