This is why it would be such a travesty if Pittsburgh moves.
The point of expansion is to bring hockey to the local sports culture. The problem is that it does not happen right away. Normally, one generation has to pass in an expansion city before you see results. However, the NHL's inept marketing has delayed this in certain cities.
Once the kids who think this is cool get older, have their own kids and start taking them and eventually their grandkids to the games, then you know that expansion to that city has been a success. All this time, now we have kids coming out of the Pittsburgh area such as R.J. Umberger and Ryan Malone.
I think that San Jose will start producing prospects at an accelerated rate since they have properly marketed themselves in the southern Bay Area.