Azimuth has been sitting idle too long. D2 needs to be reclaimed.
I suggest Azimuth take the Musashi Megaship and move in to forcefully reclaim their property. D2 is a significant asset that can be used to destroy the Thargoids once and for all. We can no longer sit idle, Azimuth property MUST be returned immediately.
Rademaker needs to make bold moves to secure humanities future, by force, if necessary. The time is now, Azimuth must secure our future.
Not a bad idea in concept, but there's not a darn chance that the players would allow it to happen.
If it happens without player input, players'll be ed.
If there's a competitive CG, Azimuth will lose.
You MIGHT be able to pull off some sort of 'bad vs worse' scenario, where Azimuth tries to take D2 and some other bad power comes in to 'save' her, and you force players to choose between supporting, say, Azimuth vs Archon Delaine. But even then, I'd bet on Azimuth losing, since they're a known bad while the other would be an unknown bad.
I suppose what you could do is tie it into the Nemesis storyline, and if you could separate Nemesis from Azimuth, so much the better.
Have D2 be moving from Aegis custody to somewhere else, maybe somewhere nominally safer, when suddenly they come under attack. At first they think it's thargoids, but then they're shocked to see they're Guardian constructs, instead. Weapons designed for humans or thargoids are ineffective against their powerful shields, and D2 is taken. Azimuth is questioned but even they admit they don't have that level of technology.
A search takes place, with an estimated survival chance for D2; the faster players search, the more likely she is to survive, with maybe a 6 week countdown. The Guardian ships undertook a series of jumps to throw off pursuit, but the speed of the jumps left behind Guardian residue in asteroid belts, and each bit contains a signature that tells the approximate distance of the ensuing jump. This still leaves tens of thousands of systems to search, but it makes it much more attainable. Some math could be done to estimate how long it will take for each discovery, then you just make enough steps for it to be something that's possible in under 6 weeks with some luck and coordination.
At the end, players could find a suborned unmarked guardian site, enhanced with human technology, where super guardian sentinels and guardian Goliaths are defending it, all protected from the sky by a large energy shield. Players need to coordinate to penetrate the base and free D2.
Depending how long she's been held, D2 will be in a better or worse state, and Nemesis will know more or less about how to create more like her. Given that it'll be basically impossible to find her in the first few weeks, she'll definitely be in tough shape, but at least she'll be alive.
After the event is over, the super guardian base will be abandoned by Nemesis but will remain as a really great way to collect guardian mats, but only as a team, because the enemy firepower is so ridiculous it takes multiple Scorpions just to make a dent in the spawn rate.