Redefine the "King of the North" after the collapse of the Soviet system.
Now that you mention that, many churches in Christendom would have to redefine that one too. I remember hearing this one in my old Indy Fundy church and on Jack Van Impe Presents.
Make the "generation" teaching chronologically viable.
I think the Society is being clever by trying to buy itself some time until the old codgers die off or leave. Leaving behind a bunch of younger witnesses who don't really understand (or care to understand) the whole premise of 1914 to begin with.