Twitch play style/ Kit change.

My friend and I were recently talking about ADC's, and I was talking about the time when Twitch jungle was the meta for a bit. Then we discussed Twitch and how Twitch could of been done better. Twitch is a Marksman Assassin. I want to discuss his Marksman capabilities. Twitch is a short ranged Marksman which he makes up for by having okay kiting skills with his W and Q. He can get in with his Q and do tons of damage with his R but when about getting out ? What if the team fight doesn't go Twitchs way and Twitch is stuck on the other side. of the team fight trying to hit the back line. He can't the invis is on cool-down and he wasted his ultimate and W on getting 2 kills. He's stuck, there's no way he's going to survive but what if his Q reset after getting kills with his ultimate. He can go in do his business and get out instantly. The kills reset his Q he gets out and can live to assassinate another foe maybe ? I just think that if you're going to have invisibility on a champ you should put some of that onto his kit.