Improve Teemo
Teemo needs improved plain and simple, in the last season after the nerf I tried to work with him, but he fell so far off the scale of power to be all but useless except in the most special occasions in matches (ie inept opponent, or being last pick against very fragile team choices)
with E having been dialed back as it was, at the time it wasn't hugely terrible, but with these season it just feels oppressive. Nearly every champ with similar mechanics enjoys a superior damage out put in their poisons/burst etc, or with passive that's outclass teemo as an assassin etc.
Increasing teemo's innate attack speed or increasing his E's ratio, or his R's ratio would go hugely towards his playability, personally I wouldn't mind seeing an increase to his attack speed, or base stats or something. He's super squishy, has no good upfront damage, no real ability to sustain, as much as I love this champ (over past couple years 500+ ranked games with teemo) I just can't play him in ranked anymore, and that saddens me to no end about this game.