I recently thought of an interesting question,and thought about sharing it-
As we know,by the end of words of radiance dalinar became a bondsmith by forming a bond with the stormfather himself.
Now,as we also discovered earlier in the book,the shardblades are in fact spern,and each radiant's blade was actually his bonded spern.
Are we supposed to expect a gigantic shardblade to fall from the skies when dalinar needs it?and if such a thing does happen,how will it effect the highstorms?