I don't see the problem in bringing more attention and pride to our anthem and Canada itself. When it comes to soccer in this country 90% of the time when people are showing their pride for a nation it isn't Canada, it's some other country they have links to during the World Cup and Euros. Why not strengthen the connection between soccer and Canada?
When the anthem is done at Maple Leaf games you can see the pride on people's faces. Despite screwing everything else up with the club, the Leafs usually do a great job of honoring our country and military during the anthem whether it's by bringing in a singer with some connection or having military personnel present.