My reasoning is because of the dialogue with the raiding Sindrian Diktat fleets being quite aggressive, declaring the player's fuel production to be criminal, purposefully undermining the Sindrian Diktat, and that the player colonies should get wiped off the Persean Sector, or at least something along those lines.
The Lion's Guard is headed by Horacio Caden while the regular Diktat military is effectively headed by Oxana Hyder, both of whom we meet during The Usurpers quest, and I feel the former is more inclined toward such behaviours than the latter.
The dialogue with the fleets is pretty crazy, but I can't really picture Caden looking at an exports spreadsheet. Maybe I'm biased towards it being more interesting to deal with a faction of the Diktat that just wants to keep the lights on, and needs you to stop exporting fuel in order to make that happen. Only so much can be done with "crazy guys want to kill you", and a good/evil split where LG is responsible for all of the antagonistic stuff feels too clean. Especially since losing the fuel monopoly is a legitimate threat to the entire Sindrian Diktat, even if they reform its government to be all about sunshine, wildflowers, and tea parties.
Do the "powerful system defense fleets" respawn?
Have to figure yes, or they'll all be gone a month or so in due to random piracy. Has the thing where the Diktat's story fleets become individual drams for a while in the aftermath of pirate incursions been changed? Maybe by having them head back to Sindria to re-equip if they're decimated by a non-player fleet.
Also, has a general buff to EBC been considered? Right now, the Remnant ship that relies on it feels rather underwhelming - it doesn't really have the flux to use an EW-heavy loadout to great effectiveness, and more-or-less feels like a worse Aurora, diverging from the general theme of Remnant ships being truly exceptional in some way, and breaking one or more gameplay 'rules' in a way that makes them frightening to fight and appealing enough to spend a capstone skill to field them. The Diktat ships feel more or less unchanged by such a small bonus, as well. Doubling it in both cases might make gimmick builds (like an APL Executor, or some weird weapon combination on an LG hull) more usable, and would add more of an
"Oh no, what the hell is that?!" factor to seeing a Remnant ship fire off an AMB from a lot farther than the player thought it could.