Wow, really? Sorry if this is heresy here, but I actually like him a bit more than Jim, though I do love Jim a lot. But Sanderson's Cosmere is just the most impressive bit of world building I have ever come across in my life. It almost blows Tolkien out of the water in terms of its depth and attention to detail.
Every one of his books is set in the same universe, the magic is different and follows different rules on each of his worlds, because God split itself into 16 different shards, each being an aspect of its 'personality' with the magic in the world being related to the shard that ended up on that world. In Mistborn there were 2 shards, Preservation and Ruin, 2 diametrically opposed shards that cause the conflict through their fighting. In the Stormlight series there were originally 2 shards, Cultivation and Honor, but Honor was shattered by the Shard that basically got all the negative emotions of God, called Odium, who has been trying to destroy the Shards for some reason.
There is a network of short stories and novellas, 11 novels (can't remember the exact amount right now. 6 I think in the Mistborn series, 3 with the 4th on the way in the Stormlight series, Elantris, and War breaker. I think that is all of them.) and a series of graphic novels. There is also some unpublished stuff in Brigham Young University library that isn't very good, according to Sanderson, because it is the first stuff he wrote, but fills in more gaps in the cosmology of the universe.
I would highly recommend giving it another shot, and/or visiting the fan site called The Coppermind where sleuths do much the same stuff as here, and try to put the pieces together.
Edit - correcting some of my comma splicing. Sorry.