There is a very good reason that having a carrier based in Subic Bay with the Air Wing on the other side of the bay at Cubi Point. Strategic location. A strategic location that makes far more sense than either Guam or Australia. We have a carrier based in Yokosuka, Japan for the same reason. Location. Close to the threat, and able to rapidly reinforce the Korean Peninsula should that contingency be required. We exercised this OPORDER every year, in addition to ANNUALEX and our treaty obligations to assisting the Japanese in defending their home islands.
We should have never have left the Philippines, but at the time it was seen as economically unviable and the money required exceeded the strategic value of the bases. This was a short-sighted decision, and in the meantime I believe emboldened a growing Chinese response to being the dominant maritime power in the area. The Chinese see the South China Sea as their "lake" and are going to continue to increase their presence, and test their potential adversaries ability to challenge them.
Perhaps the funding and political environment in our government doesn't permit placing a carrier in the Philippines. As stated earlier, the infrastructure for having a CVBG/CVW is extensive. However, these facilities are to a large extent still in place and I think the Philippine government is more amenable to a new SOFA that would be mutually beneficial. I think that a Philppines base would also be a "force multiplier" ( Never been fond of this word, because it is code for, 'make more with less' in my opinion ). With this basing scheme, it gives the effect of having 11 carriers with only 10 in commission.
Our current administration has stated our policy is to increase our presence and influence in the area near the South China Sea. But, stating it and doing it appears to be mutually exclusive.