Saying Fate and Cortex at this point feels a bit much at this point considering how much love they both have received, but oh well. I love how versatile they can be. It's not just about HP or physical damage. You can use Stress to represent far more than that depending on the game or variant. Taken out by Mental Stress? Cool. Taken out by Social Stress? Cool. Taken out by Financial Stress? Cool. And you can also tie the recovery of these Stress tracks to different things in the fiction. So versatile and fun.