Draven's Range
Draven Needs at least 600 range units. Hes pretty much in the same boat as Ashe. Immobile adc, but she has a stun and an extra 50 range. I know that no one really wants to see huge buffs to draven, but 50 units isnt huge. I think that he is immobile and every other immobile adc either has more range, or hard cc, or both. Draven should have some extra range.
If you want to qq about how strong draven is, just start playing J4 into him. If you are halfway competent, you can completely nullify him. 50 units wont change his gameplay vs a j4, hecairim, malaphite, and a ton of other champions. It would just make more sense, considering the stats of the other immobile adc's.