I had a strange thought about Raubahn and his arm.
A couple points to consider that made me question something.
In ARR we have the GSM class quests which delve into Mammets and their limited sentience or at least semi-intelligence.
In ARR and HW we have Relics that attain some measure of intelligence and the ability to communicate with their wielder.
In SB we get to see Magitek mutating and/or enhancing soldiers.
Cid and Nero and the Scions all seem to be pushing for better ways to enhance the quality of life and increase the technical capabilities of Eorzean citizens; perhaps with a byproduct of being able to fight better.
All of this seems to beg the question of limb replacements. All of the parts seem to be in place for either a mechanical, cybernetic or biological replacement. As Raubahn is a key figure in the game I wonder if this is something that could be considered likely or even possible?
Is this something Raubahn would consider?
Of course, once that door is open it raises further questions. In the fight against Garlemald, how far would the Eorzean Alliance take such a capability? One could make the argument that we'd need it to fight Garlemald on a more even footing given that Garlemald is already pursuiing enhanced soldiers. Which also begs the question, how far is too far when fighting your enemies? I wonder if the writers are setting up SB to tackle those questions.