I would not trade Theodore straight up for Marner. Theodore’s going to be a finalist for the Norris trophy in the next few years. I don’t care who or what you offer but you don’t trade stud defenseman like that, not even for a talented player like Marner. You build your team around such a dynamic player.Examples of the past are Doughty/Kieth/Pietreangelo/Herman/ etc.... Are you counting the Stanley Cups........
As was mentioned previously, Theodore has the potential to be a Norris trophy candidate some day and some day soon and as talented as Marner is I don’t think that’d ever happen. Especially when Vegas’s defense would be considered the weakest part of their roster makeup. You have Pietrangelo, Theodore who could be very good/elite, Martinez who is pretty good and then a drop off with the other 3-4 defenseman. It would be a travesty for this trade to ever happen