Tbh if both you and your opponent have FS, it can be very well-written, e.g. like Sanderson described it in his Mistborn series, there was an ability to burn a certain metal to see the future, and if one person used it, then they could see what their opponent was up to in a linear manner (kinda like Katakuri saw Pudding fall), and if both used it, then they could see each other as a myriad of shadowy possible outcomes, which I imagined was really great.