Trading all of our vets and getting youth and picks would be like getting an expansion team. We would be terrible for another 5 years at least. Trade Gay first and see what happens. Blowing it all up is a terrible idea and not practical.
If that first domino falls then there's really no choice but to burn the whole thing down.
I DO believe this Kings team is essentially missing one piece to be a winner. But that one piece is a second star. I've never been a Rudy Gay fan. I think he is a one dimensional scorer who plays a losing style of basketball. But I think he could be a third scorer on a winning team. And I think Collison is plenty serviceable as a starting PG on a winning team. But what this team is missing is a second star. Ideally a SG wifi stretches the defense (like Klay Thompson maybe even Devin Booker) but even a scoring PG (Lillard or even Curry if you want to dream big) who would make things easier for Cousins and vice versa. The rest of the roster is pretty easy to fill out. A complimentary PF, some bench role players etc - many of which the Kings do have in Temple, Koufos, Barnes, maybe even Casspi.
But getting that second star is a very hard thing to do. It will likely never happen in free agency for the Kings. They don't have the trade assets to land one either. It almost has to happen through the draft.
And that's the frustrating thing. The Kings could have drafted ALL FOUR of the guys I listed above.
For the Kings to build a winner around Cousins they need to draft a star.
And lottery pick after lottery pick in the last 8 or 9 years they've shown that Cousins was the lone exception. The one pick they were able to actually nail.