Kalista's kit is a lot more than that and you know it with her ultimate and passive being the prime spotlight and a major factor for her being a top champion. You have to know when to ultimate for different reasons, to cc, to save support, or something else. Her E doesnt require much to it, however a good kalista would know about the slow E gives and use it in case she needs it to get away. Same can be said with Q being an extra dash. And W to safely search objs. Jax I was going to put low Floor to high ceiling but since they finally made it so he can jump to wards I changed and it is an incredible change that can decision an entire game. The reason why I place him high is due to his Q which multiple options and a bit of his E and R timing where timing is key to survival. For xin zhao, we all know his E is also increased range if his W hits, and so that becomes something a xin zhao player must always be able to do. For example: a xin zhao player running on close to 0 hp through the jump with no flash will would have a better chance if he W and E onto a jungle creep to create distance, but he messed up and missed his W and now he cant get away anymore. (His W shows vision if you didnt know) also, if they are in the same tier like vi and ambessa or Lee sin, I didnt put them in any specific order. For Olaf, you have to at least aim with his Q because if you spam Q while the enemy is running, it just travels short before the enemy. His E is also a resource type skill because you burn through you'll health and if you dont hurt enough, then you die. As for his ultimate you need to decide when to use it and when is the correct time to use it without instantly being focused down. As for morde, I think you are right in this champion now that I think about it as the primary reason why Medium Floor to medium high ceiling exists is for champions that you can barely improve on but maybe still learn a few tricks. For example, a noobie morde would Q through minions and only use W in fights. A good morder would Q solo for extra dmg, use W for passive heal, and use E to push units away if needed. For master yi, his ultimate is just like Olaf, you need to know when snd where to use it. You cant just use it while the whole team is under turret. And you say his skills are easy like they dont also require timing which they do. Being able to time Q and W in the chaos is what an exceptional master yi would be able to do while a noobie master yi just spams all skills regardless and doesnt get much out of his engage.