My financial planner made the argument to me that the real money comes from authoring your own standard. My experience has not been good, but everyone I've ever known that self-identifies as a "project manager" is a hot mess. With your experience I don't know that a PMP cert would feather your nest in the slightest; they're for people who do karaoke on Fridays, not the guys who worked for IFOR. I would estimate the time you could stuff into a PMP and apply that to what you could do to visibly, demonstrably, attributably improve where you are now because that's one thing nobody else can put on their resume.
I'm just looking at fortifying my bonafides, honestly. I can see the tide is rising, and my beach house is gonna be threatened in a few years... so I'm looking in to boat building, seawall technology, and relocation options. Ya know... if the water rises too quickly, a guy needs to have options. And I like getting a paycheck and benefits.