Oh yeah, totally what was necessary.
Twitch Passive - Deadly Venom DAMAGE PER STACK 1/2/3/4/5/6 true damage (at levels 1/4/7/10/13/16) ⇒ 2/3/4/5/6 true damage (at levels 1/5/9/13/17)
No...
A pungent late-game threat, Twitch combines damage, subterfuge and foul stenches to put teams on his back...given that you don't exterminate him before he scales up. Even with a weaker early-game than most other marksmen, we're adding some punch back to his poison to encourage and reward the smart trades so necessary to his success.
Except his late game is weaker than three other champions who have better early games. (Trist, Kalista, and Vayne.)
Who else is useless in that list? Vayne. C'mon Riot, give them a better late game so their abysmal early actually means something.