It's probably different in Canada, but in the US, these divisions are already more popular than the International divisions, likely because the Intl divisions only allow 3 per country into Finals. That worked fine back when there were hardly any US Intl teams, but now there are a ton of teams and the 3 per country rule no longer makes sense when Worlds is still predominantly an American competition. The 3 Sr Open divisions at Worlds were all stronger than their Intl Open counterparts. I would probably eliminate all the Intl divisions (that never have any foreign teams in them, except for Worlds), and instead integrate those teams into the regular Sr divisions where the 10 best teams advance. The concern with doing that is that the Finalists would end up being mostly North American, which would discourage Mongolia from sending their Level 2 team that can breeze into Finals in an Intl division because they're the only one from their country. The team size of 24 with no max age restriction is appealing to teams. It's not really big enough for Medium, but you also don't have to turn away kids to become Small, and you don't have to turn away a kid because they turn 19 on May 31st instead of the June 1st cutoff. I don't know what other sports have a max age cutoff at the highest level.