Some confusions/questions I have about the Mage Update

Foremost, like a lot of the stuff. Dislike some of it (Timers on Red/Blue are iffy to me. Herald changes seem really bad). I do wanna ask some questions however:

• Why wasn't Karthus touched? At all? Like, he's really struggling and these items don't really do much to help him. Would it really be so bad to throw Karthus a bone? Maybe let his ult pierce through death-counter effects (Kindred taric etc) to give him the strategic niche of the inevitable death?

• Nothing done with Vlad's passive? Sure, it's weaker now, but it seems....like, just a stat boost. It doesn't really seem interesting and it feels like Vlad's passive is the most bland and uninteractive part of his kit. And with a kit that has Transfusion, that's saying something.

• Said you had plans for Viktor but nothing came out. Did it just not work or maybe you felt Vik was in a decent spot as-is?

• Annie's AI changes (And Zyras too). Do you guys feel this is the first step to true micro AI control in League? Is this just cleaning out the bugs or do you feel you've laid the groundwork for better AI control?

That's all. Add more if you got'em.