Having been to Wanderers Grounds, outside of the turf, it's no better than Clarke Stadium. But there is a cool factor to the games that only comes with big crowds. Also I think having the women's national team playing last year helped the cause, although the cynic in me is annoyed that Calgary can't get a game but Halifax can.
Hope the stadium happens. I think that would be a massive milestone for the league, much like the Crew building MLS' first soccer specific stadium in 1999. Building stadiums in this country is incredibly tough though.