I was waiting for the Alisa III to show up during Episode 4 but it never did. Learning that Hitsugi's VO getting sick caused the Earth adventure to get cut from 3 episodes to 1 means we may never see that ship from Algol arrive. More devastating was learning that there was yet another attempt to involve the Alisa III, this time in the form of Orakio being in Es-Ars on Omega, but that was cut as well.
This would've been crazy good. Plus, what if it wasn't Earth to begin with? It could've been Coral instead.