My ideas for a kennen rework

I main kennen and he's by far one of my favorites to play especially in the mid lane, but after playing him for so long I feel there's alot his kit is lacking compared to other mages so I really want to see a more updated kit and with this post I came up with a few of my own ideas. Please know this is just my own ideas and I understand I probably don't understand proper balancing.

These are my changes I would love to see:

A buff giving his passive a damage proc when it reaches max stacks like thunder lords that scales with level.

Next is a passive that empowers his next auto after procing max stacks turning his next auto into a lightning bolt that has a very quick auto attack time but does not add another passive mark.This ability is a passive to his ult and levels in damage with each point into his R

Up next is turning his E ability in a blink like kassadins that deals a small amount of AOE damage and applies a passive mark to enemies hit.This of course is supposed to have a decently long CD and does not have the armor and magic resist component of the current E.This will make it so he's no longer so easily kited without flash and also an instant blink seems more appropriate than another "Gotta go fast" ability.

Finally I would like to see a nerf to his ult range and increased CD of his ult, and also a change where his ult applies a passive Mark instantly to all enemy champions that are inside the radius when it activates.

I won't say that I know what I'm talking about with these changes but to my knowledge this would give him proper dueling potential as a mage without his ultimate while encouraging Kennen players to save their ults for teamfights and punishing them for poorly placed flash/E ult combos.