Well, on the other hand, they could always change the means of getting each part done...

The progression will very likely remain as:
hamlet seals > broken weapon retrieval & double-melded class weapon > 3 x mythril ore and salts > Caravan/Darkhold/Behest perfections > Spiritbonding > Beastman Currency > Faction Leve > Garuda and Ifrit Extreme.

But exactly how each part changes is yet to be seen. eg: How to get the miser's mythril and aurum salts.