Jason Botchford: Jonathan Dahlen highlights the ‘next core,’ who can score   Jonathan Dahlen scored 25 goals in Sweden’s second division this season, and you can easily make the case that kind of output at that age puts him in the conversation for top prospect in the entire Canucks organization. He has the kind of upside teams dream about acquiring when trading 30-something veterans on expiring contracts. The Canucks did just that in what was GM Jim Benning’s finest week in Vanco