Twitch's position right now and any changes if necessary?

twitch So I just wanted to talk about twitch. I don't see him much at all, even in the tank meta where late game came often twitch was just non existent..why is this? well not too long ago twitch got a VU and people started playing him and suddenly he became "meta"and riot was like lol nerf this lil shit and they nerfed his Q passive and ad. Every time I play twitch if i don't get at least my botrk + ghostblade early I feel really weak untill late game. Even with the assasins out the fact that twitch has no immediate escape was forgivable but he still didnt (ignoring that pun) Why does vayne get to have everything that twitch does but better?I guess twitchs AOE on his ult is the only saving point he has right now. So what do you think? he needs buffs? fine as he is? he needs nerfs? What changes do you think will make him viable? Better scaling on E? or higher base damage? Personally I feel like twitch should just have a higher base ad its wayyyyy to lowwwww and just doing that will help him out a lot. I mean you buffed elise so much why cant twitch also have a little love? ALSO RENAME CONTAMINATE TO EXPUNGE IT SOUNDS WAY BETTER