I am not in any position to offer any educated opinions on what you just mentioned.When I was in China I became aware that the Chinese nationalist’s, of which there are many, do in fact care strongly about Spartlys. It is immaterial that their claims to these half submerged, uninhabited rocks so far from their own shoes are just plain silly, they just believe it and that it is very imporaint. That is in the end all that counts. I could go into the reasons why but they are irrational ones but people often believe in irrational things and in this the Chinese are not alone.
It is no different than it was and still is for the Argentina’s and in their irrational belief about the Falkland’s. At some point they will probably be willing to fight. You cannot reason with them about their core beliefs.
The US concern is with the principal of the freedom of the seas and not with any of the possible resources that may or may not be there to be exploited. This makes it in to an international issue far beyond what the Chinese nationalist’s believe it to be or believe it not to be. If it is not successful address it will someday lead to a very destructive war, where even at its best everyone will lose.
It will not happen today and probably not within the next dozen years but it is coming just as sure as the sun rises. The reason why I am so concerned is though there are many issues to be settled which come along with the rise of China as a new world power, I can foresee peaceful and productive solutions to all of them with exception of this one. Why? Because of the very nature of the Chinese nationalist’s belief is in fact, an irrational one. For all people everywhere, be it some form of nationalism, a religion or even for some moral precepts which are not in and of themselves purely rational things for humman's to possess but are never-the-less are very important things to the lives of real people, the tendency is for people everywhere is to resort to the use of power to get there way.
If you see any flaw in my reasoning please point it out to me because I would really like to be wrong.
But I do know about the Chinese "nationalists" after having lived here for 10 years.
If you go to a room full of "nationalists" talking about the Spratlys or even the much more important Diaoyutai, and say, "here is a rifle and a uniform and it's time for walking the talk". You'd suddenly have a very empty room. Not because they are necessarily all cowardly, but there is in reality really nothing to lose over either of these places. It is just idle talk among idle youths.
I don't want to go into other issues concerning US/China, war, who is the good guy etc.