It projects a bigger threat by still allowing a destroyer and even a carrier if you want to reach 54 in case America or Anzac puts a blocker in 46.
I find this move allows more flexibility than keeping that carrier off Carolines. Granted, it doesn’t allow me to move 2 carriers back to 6, but I’m never going to do that anyways; I want to bring them to the money islands to protect my transports. And provided that I commit myself to taking at least either Indonesia, Celebes, or Philippines on J2 (a no-brainer), then that carrier off New Guinea won’t be out of position.
So the major advantage, besides the one I listed at top, is that it allows you to get 2 more planes into any fight off 54 without requiring you to leave a carrier out of position. You just have to remember that you’ll be shuffling your planes all around on to different carriers when you plan out your J2 combat. Planes from your carrier in 36 should land in Asia, making room for the planes from the carrier off New Guinea, which hop over to make room for the planes from Carolines.