Just throwing an idea out there, not necessarily advocating it. Would you do Duchene for Murray straight up if Flower continues his play through the rest of the playoffs? I would seriously consider it I must say if Flower keeps it up. He would fit this team perfectly and could play anywhere from wing on the top-2 lines or 3rd line C.
Several things.
A) I absolutely love the idea of getting a "#3C" of Duchene's caliber. Expensive yes (both in cap and in cost to acquire), but someone like him would absolutely change our offense from something very good to something down right scary. We would truly (for a couple years anyway) have three 1st lines.
B) I love how MAF is playing and how he has played in the playoffs over the last 4 playoffs going back to 13/14. Nothing earth shattering, but 15-13, .923 and 2.38 over 29 games is easily good enough to win. Murray's by comparison is 15-6, .923, 2.08.
That said, I would not do this trade. I think that we could find another way to get Duchene if that's really the direction we wanted to go in, or that we could find other half decent players to be a #3C who wouldn't cost us Matt Murray. On top of that, despite how good MAF has been for us this year and that I think he could easily be this good in the future, I think for him and for this team, it would probably be best of everyone moved on. No more worries about what happens to him mentally if he gives up a weak goal. He's been good to great for us (looking at more than these playoffs), but I just think it's time to move on.
In addition to that, you're talking about trading a 22 year old #1 goalie. We have at most a 5-6 year window where we will truly be one of the top teams in the league. Maybe another year or two if we're extremely lucky and everyone ages well. Murray over that span should only get better. MAF over that span will realistically get worse at some point. Sure we have Jarry and the guy we drafted last year and will likely draft more. But there's no guarantee that any will be #1s.
So I'd much rather stick with the sure thing (Murray) and just deal with trading MAF (or losing him to the ED) and then seeing what we can do about a #3C.