> US power projection would be tested and probably ultimately fail due to unbelievable expense
I think you're wrong here. The US has been investing in power projection for 80 some odd years now, and is leaps and bounds ahead of any other nation. Yes it would be expensive...but we've been paying a premium for quite a long time to have this capability. Additionally, the supply chain is drastically shortened because of the sheer number of US or allied bases in the area - Japan, South Korea, the Philippines (though that one has become a bit questionable).