I think that there should be a number of different Stormlight games since it's such a big universe.
My ideas:
1. A strategy game using the Total War mechanic (Strategy mode where you build structures, train soldiers, purchase plateaus, move your armies, etc; and tactical mode where you fight out the actual battles).
2. A first-person killer game where you play as a Surgebinder and Shardbearer and carry out missions. (i.e. you become Szeth).
3. A first-person killer game where you play as a Radiant. (Same mechanics as above, but different time period.)