I think it would be great to have one place which will list the matches in Canada, but I very much doubt that MDs (especially in provinces where the matches are already listed on the provincial site) will enter it in that system, especially if it's not really going to get them any extra shooters (level 1 or 2 matches across the provinces are not likely to attract out of province shooters) - this opinion is based on my personal conversations with multiple MDs across the few years that my system has been used by them. You might disagree, and you might be proven right, but that's what I've seen and heard - MDs, from the comments I've heard, really like the system because it really frees them from a lot of things they had to do manually before - they get more functionality for much less work. THe joy of reducing their workload is real, they do a LOT already... I think that a lot of them will tune you out if you ask them to do something new/extra (even a small thing), which offers them virtually no immediate/visible benefit ) ... BUT: An automated way of collecting that info into one point (Google, or custom, or whatever) would be great - if HB wants to do something like that, that would be awesome...
Or euxx - you offered to help, that'd be a perfect project for you - scrape all of the provincials' websites' calendars into one place, and make it visible on twitter, rss, google calendar, email/sms notifications, etc...