another potential inconsistency i've found is that during the first meeting with Noel, she says that Zyrcrum crystals are only found in the outer rim of the galaxy, and the Solar Alliance currently has no way to obtain them; the crystals on the Agni and the Bellona were provided by the Gregorians specifically for the mission. however, when interrogating Pip, she says that the map Sybil and Yoo-Ri found is a map of Zyrcrum deposits, and Earth is on that map, indicating a deposit of Zyrcrum on Earth. it could be that the Gregorians either didn't know about the Zyrcrum deposit on Earth or lied to the humans about it, or it could be that it'll be addressed later, but it seems inconsistent as of Pip's interrogation.
another possibility, i suppose, could be that the Gregorian power plant on Earth is powered by Zyrcrum crystals, and that's what the map is referring to; however, the impression i got from Nyx's comment about the hidden lab on Xerxes ("How long ago must this have been built...") and the appearance of the ruin where Sybil/Yoo-Ri found the map is that it's been more than 17 years, meaning the Gregorians wouldn't've made first contact yet, but that could be a mistake on my part.