How to fix tank yasuo
Yasuo players build defensive items like GA, Blood thirster, Tri force , Phantom dancer, dead mans plate and frozen mallet because he is so squishy. It is a no skill bandaid fix! You can fix this by encouraging glass cannon builds. Make his E and R make him both untargetable (think yi Q) and invulnerable during the animation. This will enhance the best yasuos and make the inexperienced ones basically the same.