So, I've been thinking about my cage match list, and I want to change my preferred 16. In no particular order,
Jasnah, Vin, Vasher, Raoden, Szeth, Alcatraz, Dalinar, Kaladin, Kelsier, Dilaf, the Lord Ruler, Sazed, TenSoon, Susebron, Sadeas, Marsh
Mistborn characters: Vin's advantages are obvious, being small, quick, and incredibly skilled. Kelsier has an edge of ruthlessness which will serve him well. Marsh has additional Inquisitor abilities which make him a force to be reckoned with. Sazed is all about planning and the strength of Feruchemy. It would be fascinating to see how he does. And TenSoon, because it shakes things up.
The Lord Ruler because I want to see how he will match up against other cosmere characters.
Way of Kings characters: Dalinar and Szeth are the easy choices. Jasnah is powerful and highly motivated. Sadeas for his well-timed betrayals, which would totally give him a huge advantage against someone more naive like Susebron.
Elantris characters: Raoden, naturally. He has similar disadvantages as Sazed, but he deserves to be here. Dilaf for the same sort of class as Sadeas. (Sadeas vs. Dilaf would be amazing)
Warbreaker characters: Vasher because we need an Awakener. I want to see how he fares against a Mistborn or something. Susebron because he's surprisingly balanced--strong, but also naive.
Alcatraz because we need to remember Brandon writes more than cosmere novels, and because he'll sass you into submission.
So, I guess it depends what we're going for here. I imagine it as more of Suvudu style things and less "let's legitimately argue how this would work if Brandon would write it". Focus on fun. Because, um, it should be fun.
If you like this bracket, upvote this post.