Why is Kennen so weak?

This champion has some of the lowest base damage on his abilities I have seen. His level one Q, for example, does less damage than an auto attack, which begs the question, why even have a rank one Q that can be blocked by minions when you can just auto attack instead for more damage and no chance to dodge. When Kennen tries to kill a minion wave, he has to make himself completely vulnerable to a gank by putting his E+W on cool down. The funny thing is, the minions don't die. They all survive with low health and then die to friendly minions before you have time to auto attack them. His Lightning Rush is so easily shut down, without flash he would never ult anyone. I am pretty sure no one complains only because no one plays him. It's an understood shelved champion. He needs a major rework badly.
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