AD Kennen should not be more viable than AP Kennen
There is no reason AD
should ever be stronger than his AP counterpart and if there is, something is wrong.
In season 5 when AD Kennen was dominating solo queue and professional play, just like it is now, he was given a good power shift and nerf so that what he was made to do was what people were actually doing. I played Kennen tons ever since I joined and Kennen is in the most messed up state he has been in. AP Kennen provides team utility and good pressure all around, but his ult has grown into a stun-bot rather than a powerful ultimate to be feared of when he had it ready. Now people are scared of his auto attacks rather than his ult. I can't count how many times I would target the ADC with simple auto attacks and they flash, but when I ult in they just wait for the stun to be over.
The main reason Kennen is in the messed up state he is in currently is because they hit his ultimate hard, while ADC items were being buffed patches later which brought rise to this AD monster of a top laner we have today. His ult just doesn't do enough damage for it to be useful anymore.
What Kennen needs is another power shift so that he can be viable going AP again. AD Kennen provides wonderful 1v1 potential not only in top lane, but he can usually 1v1 the ADC too. I'm not asking for the dreadful AP Kennen last season to come back, that was too strong, However, I am asking for a better ultimate that can sway a game from a win to a lose like it was made to.
TLDR: Kennen needs a power shift so he can be viable AP again.
as their first item and completely negate any damage you manage to do to them!
are effective to his mix damage