I dunno, seems to me there have always been players trying to manipulate the system, as long as I've followed junior hockey. These days NCAA threats work nicely, but it used to be players would state flat out they won't go play in this or that city and if you draft me you'll just have to trade me. It has pretty much been par for the course, for the 3 decades I've followed the OHL. I don't find it becoming any more or less common these days.
And I also don't think anything needs to be done about it. I mean, we're already taking thousands of 16-17 year old players and putting them through some fairly non-ideal life situations packing them off to live in cities away from their families, etc. I don't think it's wrong for some tiny fraction of them to fight the system to whatever extent they can. They do have options.
Recruiting might be too drastic, or at least too much change all at once for the CHL, but in some ways it probably would be better. Although of course there are points to argue in either direction. For now, the players can exercise some degree of choice, and I fully support any player or family who does. It's their life.