Good point on the WBC. The WBC was created to serve as both a springboard for young unknown talent around the world and a political means to advance agendas. Cuba was playing in the US even before Obama's famous trip to colonise them in an effort to bring them under the Rothschild banking empire.

Of course, Japan is the greatest advocate of Baseball abroad, so it is good to give them their "March Madness" of Baseball. Same for the Dominican Republic, which has arguably more talent per capita than any other country in the world.

But the WBC exists for the same reason NFL in England does...to expand the physical borders of the game itself. The NFL has aspirations of becoming a "World League", Roger Goodell and his brand-killing antics notwithstanding. But Baseball is not just America's Favourite Pastime, it is the world's favourite pastime if you don't consider Europe or South America (i.e. soccer "Futbol").

I think that the WBC is important for the game because it involves countries that wouldn't normally have a stake in the game apart from exporting their talent, plus it gives a sense of national pride to the players themselves. Obvious issues with WBC are injuries and valuable time away from the Major League club during Spring Training. Chemistry is very important, and championships are won through chemistry. Players needs time to bond with their clubs and teammates in order to develop that chemistry. It is the unspoken truth about winning...talent isn't enough. Great teams need time to come together.