A Kadri for Brodin swap makes more sense in the off-season around the draft, where the Leafs will know where they pick in the draft and have a better indication if Stammer is heading for UFA.
I think GM's have a more level head in the summer though, and the return might not be as good for Kadri.
I don't think Stamkos should be part of the discussion.
One of Bozak or Kadri to insulate the kids, and perhaps a rental center for depth.
Reading the Wild don't have many picks this year, perhaps Leafs could help out their cause by adding a pick or two to Kadri and expand the trade?
Wild are not a rebuilding team, so maybe a NHL ready Kadri would fit in more than one of their uncooked top end prospects?