KD is a top 3 player, but 34 year-olds with injury histories decline rapidly all the time. You're probably getting a 2 year window with KD as The Guy.
The Nets just had that guy for two straight postseasons, and won 1 series. Yes, there were health problems, but that's the thing with short windows: shit happens, and suddenly the window has closed.
I know the common wisdom was that this would be an unprecedented haul, but I'm not seeing it. Teams seem very, very reluctant to part with young stars to get that, particularly if they're expected to give up picks too.
Totally agree that "run it back" has a greater chance than people think, at least to start the year. Rehabilitating Simmons before dealing KD would also be useful.