Are you talking about Exceptional Status? Well, it's up to each league, not Hockey Canada. It's also an application thing, some guys just don't apply. It's not like the leagues come knocking on kid's doors. The parents and the player have to apply for ES.
As far as I know,, Rooebroek, Heidt, Yager and McFarland have been rejected for ES status. I don't think McKenna even applied.
Misa was granted ES partly because they feared he was going to Chicago Steel. They also gave Day ES partly because he had dual citizenship and might flip.
The Sean Day situation was borderline criminal. I watched him play AAA because we had a family friend playing on a team in the HPHL when Day was at Compuware. He played up with the '97s, which isn't all that uncommon for that level. As far as I'm aware, that was the first time ever played "up" and that in previous years he had played alongside his '98 age group. Of course he was another one of those super early January birthday types that Minor Hockey seems to produce an abudance of, so age-wise he really wasn't that much younger playing alongside the '97s.
Good player for sure, but didn't stand head and shoulders above the crowd. Very developed in his skating for his age. He wasn't the best player in that League, not even close.
The sole reason they accepted his Exceptional Player status application is because they were worried that he was going to accept an offer for the USNDTP the following season, and that would have him play in the IIHF Under-18s, and thus lock him into USA for all future IIHF competition. In no way was he a kid that looked good enough to PREMATURELY play in the OHL above his age group.
For evidence of that, he is, as far as I know, the ONLY exceptional player that didn't go first in the OHL Priority Draft (or the equivalent in the other two leagues). Exceptional should be rare... a kid so good that another year of Minor Hockey would be a total waste. A once every few years kinda player. Day wasn't that, hence why 3 OHL teams took a different player ahead of him.
I'm sure he had to go through his whole Junior career getting chirped as "Mr. Exceptional". It probably still happens in the AHL. I know it was his/his family's choice to apply, but you can't really blame a kid getting big aspirations on his head about being the next Ekblad or whatever as far as Exceptional DMan in the OHL. The governing body did him wrong by getting greedy and thinking about World Junior rosters 3-4 years down the line and not doing their job by doing what is best for the player.
Oh and as it turns out, Day never made a Canadian World Juniors roster, and frankly, I don't think he ever would have a USA World Juniors roster either.