Was there a point of some kind masked somewhere in your post that I just didn't get? It's not like I announced this as breaking news, I just wanted to hear what people think of the idea. --- Going to church doesn't make you a Christian any more than standing in a garage makes you a car.
Not only is the best concept art pretty much MS Paint trash, it's a corny idea that Teemo needs no more of. The fact that most of the images are tired attempts at memes doesn't help their cause either.
Added detail: if an enemy champion walks by Shroom Teemo, he explodes, dealing true damage to enemy champions caught in the blast. The catch is, he'll get deleted from the system, never to be seen again.