Oh Renarin, I have no doubt he is special in regards to his spren and surges. But I can't get this niggling feeling that Shallan had something special about at least one of her surges. I mean why has her family been the interest of Odium? Perhaps because he could see the future and her future Radiance and connection to the Kholin's? Perhaps I'm wrong, but as far as i know, when did she bond with Pattern; she was so young and at about time when there weren't many Surgebinders, at least that we know of. Perhaps Cultivation intervened? I dunno, I suppose we'll know more when we see more Lightweavers. Maybe we'll see Vathah or someone.