Riot never addresses this point about interaction. @Riot look here
I often see Riot talking about lane interaction in mid lane.
How am I supposed to "interact" when I play Karthus versus Leblanc, for example?
Like she wins every single possible trade and immediately teleports to safety. What kind of interaction do you guys want to see? The only choice I got is to hide, cs, and outscale her in teamfights. You guys buffing things like ignite only makes the experience more frustrating.
I feel like your philosophy for interaction only works with 2 mages (for example orianna and karthus). Once you throw in high kill pressure, low risk champions like Leblanc it just messes everything up.
More:
The same can be said about Ahri. Yea we can "interact" except if she lands 1 charm I'm dead, and she has 4 flashes(with ult) that also do a lot of damage. Talk about being both safe and deadly. So why would I want to play the interact game when her chances of killing are heavily in her favor?
The same could be said about Kassadin but he's actually balanced and doesn't 100-0 easily.