Neuter. Twitch. Jungle.
It's insane how he's still a viable jungle, back in the day he jungled but wasn't top-tier. Now he's a meta pick that basically is just if you took Shaco's strengths and multiply them.
And don't tell me that "HE'S SUPER COUNTERABLE". It's not. He can easily avoid redwards, he has NO indicator unless he's right on you, and he can easily press R from a mile away and instakill you.
Why doesn't his Q give a ! indicator? Rengar does, Pyke does, Evelynn does. They all have to go close range to attack too, Twitch is Ranged and has a range steroid. Either neuter his ability to clear camps, or nerf his Q to notify you when he's nearby. It's so damn annoying when we have two red wards and he can still easily sneak in and 3 shot us early.