I think you're right on everything up until what you think happens with Dame on the Warriors after 2018. I think if he wins with the Warriors in 2017 and Durant joins them that they would win together in 2018, I think they would then stay together if they lost in 2019 because Dame is a different kind of leader than anyone the Warriors have right now and he wouldn't have the MVPs that Steph does, so KD would be the best player on the team but Dame would hold that team together. I think they would win in 2022 and maybe even in 2021 and still be title favorites now. This whole thread is lousy with conjecture though so it's all just very far out there make believe shit.
You think Dame beats that historically good Cavs team in 16? Maybe he controls Draymond better so he doesn't get suspended for Game 6? But if they win in 16, KD doesn't join them for 17-19.
I don't apply the if X happens then Y wouldn't. I simply swap Dame and Steph with each year's roster around them exactly the same. 16 Warriors wouldn't win 73 with Dame in reg season. Less. Steph was unanimous MVP that year. But I think they'd still make it to the Finals and Dame won't underperform significantly like Steph did