Draven, high risk, but a high reward?

Hey, I wanna make a discussion about probably the worst adc if he falls behind. Is cool that if you get a lead into early game, but this isn't happening all the time, but what happen when you fall behind? You just don't exist anymore. Compared to others adc, he tend to win games with his lead from kills most likely due to his passive, but when that doesn't happens, he falls, worse than the most of the adc, cause he doesn't scale that well later on. We all know what happened when his passive got a critical nerf, but I still think that was a litte bit too much, cause he's way too risky to pick right now. I think that he may need just a little boost into his passive and he might be alright.