Hardest 6300 IP Champ?

I think Yasuo is a bit more difficult than Azir, but I'm naturally not very good at melee champions so have some bias there. I'd say Kalista next, but only to get used to her; once you get the different style of attack moving down, not so much.

Hardest to fight: Hardest to play: My fav:

For me its or mostly because its difficult for me to micromanage.

Draven by far

You forgot Quinn in your poll. IMO, she can be quite difficult to learn to play well, but once you get the hang of her, it becomes pretty simple of how to play her effectively.