What should I be doing as talon in the late game.

I like playing talon. I've played him since the beginning of s6 when everyone was picking assasins and bust mages. This was also when brand was broken af. I used to oneshot the world and now, it seems as if he has even more burst and a better way game. I seem to have no issues what so ever getting first blood. The problem seems to be if the game goes late, you join Al-Qaeda or isis and become a suicide bomber since you fall off pretty damn hard late. It's probably worse than Pantheon. The problem with getting your lanes fed is you'll kill them before anyone can react. I've seen my ult take an ad carry from max health to 10 hp. That's not even inincluding the blades converging back to me. That just the initial button push. That game I got 35 kills ad we still lost because it went late and we had tristana who is kind of bad atm even though she's supposed to be a hypercarry. Jinx just stalled out and got fed. And Veigar at the same time was catching up but could get much cs. So if I fail to end the game, what should I be doing late. At least with Pantheon, you can be somewhat of an initiator with your ult and w but you still die unless you build bruiser which I do to be on the safe side. Full ad panth is a bit greedy. But what about talon. He can't do that since he's an assassin and that's all he is. So what do you do late gameas talon.