Those unused train tracks in Central Thanalan...

[CUTS3R]

Considering how Typhoon and Atomos ended up being tied to Hildy quests i can very well see the Doom train being tied to them in the future.
Either that or a dungeon, but a full scale primal? Not a chance.

[KisaiTenshi]

Considering how Typhoon and Atomos ended up being tied to Hildy quests i can very well see the Doom train being tied to them in the future.
Either that or a dungeon, but a full scale primal? Not a chance.

Well Ultros/Ultross and his buddy Typhoon/Chupon were entirely gag characters of the scale of Hildibrand in FF6 AND in the other cameos he's had (ret-conned into FFI, FF12, FF13-2 and at least 10 spinoffs)

[Alistera]

Problem there is... Who worships trains...? It would work better as a Voidsent machine created by some tech saavy Voidsent. The entire fight would also have to be like Alexander and take place inside.

Who worships trains? Do you really need to ask that with all the monetarists in Ul'dah using them for their supply chains? ;p

[Atlaworks]

Problem there is... Who worships trains...?

[CUTS3R]

Well Ultros/Ultross and his buddy Typhoon/Chupon were entirely gag characters of the scale of Hildibrand in FF6 AND in the other cameos he's had (ret-conned into FFI, FF12, FF13-2 and at least 10 spinoffs)

Dungeon then.

[EdwinLi]

Problem there is... Who worships trains...? It would work better as a Voidsent machine created by some tech saavy Voidsent. The entire fight would also have to be like Alexander and take place inside.

Well I can think of one certain Dalamud worshipping cult, that we have not heard from in a while, that may worship a Demon Ghost Train.

Also, as it was revealed in 3.0 and Alexander Story

SPOILERS

Primals do not need worshipping but to give a Primal form they must have a strong enough Belief to give them form. Alexander is a example being that the Goblins do not worship Alexander as a God but through their strong belief for a Walking self sustaining Fortress colony they gave it form and see Alexander as a tool to farther their goals.

Worshipping is just a way to make beings provide strong belief for the Primal to give it form. A Ghost story about Doom/Phantom Train may spark a strong enough belief for it to take form assuming there is enough Aether crystals on or near that Train.

[IzzyData]

I'd love to see a ridable train for transport. One you can actually walk around on while it moves.

[Matrinka]

Well, since Edda is still floating around Eorzea... I'd love for her to somehow become involved with the Doom Train and have Hildebrand investigate.

[Darus]

There needs to be a couple of Garlean engineers that end up accidentally pulling a Gilgamesh with the Phantom Train.

I am 100% for this, and it would make my year.

[OMEGA_HACK]

Problem there is... Who worships trains...? It would work better as a Voidsent machine created by some tech saavy Voidsent. The entire fight would also have to be like Alexander and take place inside.

Well of course like mentioned already they just need people to believe Doomtrain is real and with enough Crystals will can happen. And what a better place than the streets of Uldah? I mean I am sure the Syndicate has a stock pile of crystals hidden within the city in a warehouse or vault. The "big bad" of the Hildibrand quest could be spreading a "ghost story" to the children of Uldah, since children are highly susceptible to believing in ghost stories it seems all to plausible.

The fight could be really cool too and be a trial that seems like a dungeon in the sense that a team of 8 goes from train car to train car fighting some monsters to make it to the engine room of the train where you fight a boss to "disable" the train so it cannot move, after a little cut scene we are taken outside the train and fight the Doomtrain proper as a Primal.

Could be cool.