For my part, I certainly agree with the don't trade any of the current top four for him, mainly because of the contract situation. But I also think that on the other end, Bean/Fleury + 1st, or less as some seem to think, won't be quite enough to get it done.
I'm not all in on Duchene as the only option. I just hope if one of our playoff spot rivals get him, that we've added multiple pieces to improve this team and we get continued improvement from our youth and prospects, because I think the risk of Duchene being done is incredibly overstated. Time will tell.
The risks of getting Duchene are very apparent because most fans understand the value of they players they would be losing.
The risks of not getting him are harder to realize. Things like the prospects maybe being moved for less than full value due to over crowded blue line (see TBL and their forwards) and then there is the question of where to get another high end center. Maybe try and move up in the draft this year and outside of that who knows. You could try and get a project guy like RNH and hope for the best but that not the best plan ever. High end centers are tough to get and its pretty tough to go far without them. MTL, CBJ, STL and Min are good examples of that. They all have incredble D but have struggled to get far in the playoffs despite very strong teams.