I like all of these trades. I think that Petan would be a good fit as our third line centre and that Maroon could help Winnipeg gear up for a cup run. Maybe send a 4th instead of a 5th? not sure.
Jenner for Strome seems fair as Jenner has struggled but has proven he's capable of scoring in the past with the right linemates, and Strome would really help solidify Columbus's centre depth.
The rest of the trades all seem pretty spot on for value.
Really like the idea of Leivo in Edmonton as he is cost friendly and I feel with his speed, skill and size he'd look really good in a bottom 6 role for us.