Both of these trades do not make much sense.

Toronto is getting fleeced in the Vegas deal, you are sending Nylander (albeit getting rid of a not so good Zaitsev contract) to Vegas for a good prospect and what would be a late first and second round pick. Nylander's return should be more than that and Toronto need NHL ready players not prospects. I think if Toronto trades Nylander (I think they should be strongly considering dealing him) they need to get a NHL ready/ top 2 defensemen in return.

And then the Carolina deal, Carolina are the ones getting fleeced now. They are giving up a top 4 defensemen on there current team for a bottom 6 defensemen, a sub-par prospect and and late first round pick. Hard pass for the Canes.