NJ never does this

As I said in the description... this is probably stupid

Just from a value standpoint Minnesota would be adding a lot

While I agree with your assessment of what Fiala could be in NJ centers are just too valuable. Hischier, even with all of the injuries this year, is already a really good 2C lower 1C who is still very young and has a lot of potential to grow.

NJ would need quite a bit of sweetener to consider. They might even want to add Boldy or Rossi.

1 for 1, not a chance New Jersey considers this. Positional value alone they lose the deal. Fiala has been decent in Minnesota, but shooting middle 6 wingers are pretty easy to find anywhere. New Jersey already has quite a few in their system that may be ready soon in Holtz, Mercer, and Foote. Not to mention the guys they already have their now.

I feel like your logic of saying that Hischier has been on the downward trajectory is a more of something you're just trying to make justify New Jersey trade him for your benefit, rather than an actual reason. I'm not arguing that his production has gone down, but as you said it went down after Hall left and would go back up with Kaprizov, but that's more reason for New Jersey to get him a winger rather than trade him away. And again, they have guys coming in the system for that. In the midst of all the "downward trend" New Jersey still felt comfortable to name him their captain at such a young age. To me that says they're still high on him and not looking to move him at all.

Minnesota adds...Rossi, Boldy, Addison and both 1sts
Or includes Kaprizov in the deal.
(In other words, Hischier is staying in NJ)

You'd add Fiala to help Hischier. Otherwise its not worth discussing

No way the Devils even consider this

Nico is staying

Hischier > > Fiala, Minny would still be adding big time.