Ex-NHL'ers kids have one thing in common, connections. Believe me, I was in a different sport and if my kids had wanted to play that sport they would have been selected and moved to the front of many lines.
So many ex-NHL players, ex-D-1 stars, ex-coaches, current scouts, NHL front office men....their kids make the teams and get moved along because the differences in abilities is often an opinion and the differences are often very small. It is a nepotism / legacy game unlike any sport I've ever seen and thank God my kids prefer playing for the fun of the game and then hitting the books!
It's also a sport where you need to ask to move ahead. If your son has an interest in playing in the USHL and has the ability you need to let the teams in the Midwest know. And if Daddy is an assistant coach of a D-1 school, an NHL scout or you and your brother played there....well it is assumed they will do you the favor for something else down the road. Not bitter, that's just the way it is.
And that is why people playing on full season U14, U16, and U18 club teams spending $7,000 per year is just plain stupid. In the end, the ones that remain in the sport are the ones who have parents with money or as pointed out above have connections to the NHL. It is just the way it is in this sport. What did the USA jr. team have this year with kids from ex-nhlr's. Let's see, MacInnis, Tkachuk, Hitchcock, I know I am missing others. These kids did not make it because they had the genes of a NHL player. They made it because they had money and connections. In the end, they are the ones remaining because they outlasted everyone else in the sport due to an endless supply of resources and connections.