NO one man is more important than the organization.
Listen. Every team that trades their superstar loses out. No matter what, they lose. You may think in your head, that you are going to get some sort of unreal package of heavy weights, but its not going to happen. Go ask Boston how long it took them to get over the trade of Joe Thornton or even the pens after trading Jagr. Those trades... as i said... never work out.
Please. I understand you are as pissed off as most of us. But lets take it back a little bit. Trading Crosby will never (ever) be the answer. He is averaging nearly 2 points a game. He has had a concussion problem, but many players have had issues with injuries. You don't trade them because something might happen to them one day. That could happen to anyone. The logic makes no sense. Its like saying "well this guy is amazing, lets trade him before he gets in a car accident and we cant get anything for him." Nonsense.
I'm not pissed off...
1) Boston was incredibly wise to deal Thornton. He is a perreneal no-show in the playoffs, and belongs with the same in San Jose.
2) Thornton is NOT a 'generational' player, and his return would be dwarfed next to what could be gotten for Crosby.
3) Your scenario is missing the following:
'...lets trade him before he gets in a car accident' should be accompanied by the fact that this mythical player (of your choosing) has had multiple accidents in the past 18 months, been at Harmarville rehab for damn near the entirety of those 18 months, plays a game (or drives a car in your scenario) in a fashion that increases his chances to have another accident, and will likely retire prematurely following his next accident. Oh...and he takes the keys to our sportscar with him, with NO suitable replacement in the garage...not even a loaner.
Certainly this rough sport can lead to devastating injuries to any player. However...we are not speaking of 'any' player. We are speaking of the top talent in the league with (I repeat, and you failed to mention in your scenario) a history of concussions / traffic accidents. The likelhood of the 'next' hit being career-ending is much higher than with other players.
Disagree? Ask anyone in the medical profession...or...Eric Lindros, his brother, Primeau, etc...