I hope and predict that the Warriors beat Cleveland 4-0, go 16-0 and to see the whole NBA, including Adam Silver, speechless.
David Stern would call his successor immediately. - "LeBron is the best player in the world, with the team around him made for his measure and still they have mopped the floor with them."
"Yes, not even a half competitive finals!" - Adam would sigh while looking at the floor.
"It might be because they were a 73 win team that signed Durant." - his personal assistant would intervene. But his words don't provoke the answer, just silence.
Then we would see the summer, GM Lebron trying desperately to get more help to squeeze the 4th title somehow. His efforts would be in vain. As we, the Celtics, would just go along our route and will be smiling in the June of 2018, winning the 18th title, symbolically.
So, that's my 2017 prediction with some extra value as there is an extra prediction for the 2018 finals.