Technical point, but Neptune's Aphelion and Perihelion are within about an AU of each other, so the planet's orbit isn't an issue. Pluto, Eris, Sedna, etc. on the other hand...I assume that's what you meant, and well, that'll be an issue in a few decades or centuries. Go-Nin probably has a fairly steady stream of supplies rocketing toward Discord for exactly that reason, so if you wanna do train robberies in space, there's an option. And I just had a thought I'll get to at the end of this, since it's another topic entirely. But even then, it already can take years. That's just the nature of space travel and with transhumanity being immortal, isn't a huge problem outside of crisis situations. That far out, most of them are virtual habitats or some version of a processor locus, which require little more than power and occasional materiel to function, something that's abundant in the Kuiper Belt and Oort Cloud (admittedly not exactly [em]close[/em] to each other, but them's the breaks). Self-sufficiency is the name of the game, but it bears mentioning that very, very few habitats are actively going further out. Things like IOCC-226 TYCHO BRAHE and Crystal Wind are exceptions to the rule. Other habitats are orbiting something, so they're going to be as stationary (for a given value of [em]that[/em] word) as one really gets in space. My understanding of it is that your archetypical TN habitat is physically incredibly austere, with just the bare number of (multiple-egoed?) synthmorphs needed for things like latching onto a chunk of ice/rock and harvesting volatiles and materials to refuel the reactors, repair micrometeroid impact damage (likely incredibly rare that far out). The actual habitat, and by all means correct me on this, will just be whatever propulsion got it there, the all-important reactors, the physical servers for the colonists to live on, some basic repair and nanofabrication suites, equipment to process physical materials (mining/processing gear, basically) and a bigass communications array, bolted to a superstructure that's going to be pretty spindly. [em]Maybe[/em] some defensive weapons, but the distances involved that far out are so mindboggling and detection of any thermal signatures, like an approaching ship, so trivial that I honestly can't imagine conventional piracy is ever an issue. Maybe exhuman attacks for the particularly mental ones, but having a small mass driver would pretty much handle that before they got within a million kilometers (or vice versa, but that's space combat in a nutshell anyway). All in all, the needs for anyone to ship them anything physically are basically nil and would reflect incredibly poor planning on their part.

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To the point, were even far casting to them, and sending them materiel girls is a hassle.

But I suppose if you really, really need those material girls suddenly, well, there's gotta be someone willing to ship some pleasure pods for a tidy profit. (Couldn't resist.) --- As for that other idea...what if Go-Nin turned out to be undertaking a collossal project to head off the issue of Eris's extreme aphellion since it's close to its periapsis now? I imagine the math involved in altering the orbit of a (1.67±0.02)×10^22 kg rock is absolutely terrifying, but that's a goddamn Pandora Gate on that thing and it's not like there's much else a ball of ice and rock can be used for. Theoretically, converting as much of its mass into propellant as they can is a massive, massive undertaking (though they can bring more in through the gate, which is an interesting bit of propellant physics by itself), but a militant hypercorp with a hard-won dimensional anomaly to protect and profit from may just decide to go for the Hail Mary. It's really only about building a big enough engine and not cracking the rock in half the wrong way.