New content considerations

Concepts exist, 3D models and 2D assets likely do not, therefore very unlikely unless someone wants to take it on as their pet project.

Kaiser Sigmund and Rico’s story conclusion. Hammer stated that Rico is next in line. Rico pulling rank to activate Yggdrasil IV? Abandoning his claim?

Followup after Bart’s declaration of democracy. This can be expressed with a few NPCs remarking the change in leadership or the new purpose of Fatima Castle.

Making the content accessible the moment the player gets access to the Yggdrasil for flight.

Good locations would be the Oprhanage, Ethos HQ (repurposed into a care center for those not able to get to Nisan?), Bledavik and Nortune, and Nisan.

Very narrow opportunity to fit it into gameplay, treat it like Battling in the endgame and how it’s just a neat distraction rather than serious gameplay.

Mahanon reusing areas from Babel Tower’s on-foot sections?

It would be cool to have more battles using the mech, especially if they’re meant to be challenging instead of guaranteed victories like Fort Hurricane. If so, Fort Hurricane can be rebalanced to actually be a challenge.

Pris and Noln towns in Ignas as new areas. Bethlehem, Golgoda, and Kadomony in Terrane. Ethos HQ and the Orphanage in Aquvy. Bledavik and Dazil in Ignas. Nortune in Kislev.

If the data has survived or enough assets are available. Ramsus would be in the endgame, Margie would be applicable around when Elly permanently leaves the party.

Canonically, the Seraph angels that come from Merkava possess self-regeneration, it isn’t until the end of chapter 60 where Taura uses what he learned from the Xenogears to arm the party with Disassembler Devices to counteract the nanoassemblers. This can be expressed in gameplay as enemies regenerating health every round (high enough to force players to use strong attacks while not high enough to double or triple the time to kill the enemies).