I'm not a Maple Leafs fan, but I remember watching Salming play in the early-mid 1980s. He was one of their best lights on Leafs teams that were horrid on the ice and not much better off it, thanks to the reign of terror by Harold Ballard. When the team was competitive in the mid-late 1970s, he was among the best defencemen in the NHL.
He was a pioneer as one of the first European players to play in the NHL; took a ton of abuse from opponents but stood tall in the face of it. He was underrated as a player, lost in the shuffle a bit to the big 3 in Montreal (Robinson, Savard and Lapointe), Brad Park, etc.
My condolences to his family, the Maple Leafs organization, their fan base (especially whoever saw him play) and to all of you.