I'm not advocating for or against checking...just thinking out loud about how it would be implemented and what a potential unintended consequence could be.
It would certainly increase the entertainment value, but as for player development I could argue that a larger talent pool would force the "shity" players to improve more so than forcing them to deal with checking. I could also argue that allowing checking in the world championships would widen the gap between the North American teams and the rest of the world, making the non-USA/Canada games even more unwatchable. I feel they are that much better.
If checking means less players playing through High School, I don't want it. If it doesn't affect growth or enhances it, put me in the "yes" column! I gotta think/hope that it has at least been talked about or studied by the sport's governing bodies.