I think I like the idea of Jasnah and Wit on paper, but the execution left something to be desired. I've always had a weakness for doomed love stories, and I think this one is super doomed. Wit flat out told us he'd let Roshar burn to get want he needs if he has to, and there's no way Jasnah would let that stand. Two lovers, driven apart by their commitment to incompatible goals and principles? That's my jam. Plus they've got the whole "you are the only one who can keep up with me, therefore I respect you above others" thing going on, which I like.
At the same time, Chapter 99 never made me feel like they were actually in love. Good friends and intellectual partners, yes, but not in love. Some of that is because romance is not Brandon's strongest suit. He's also writing his first overtly asexual romance, which just adds a layer of complication.