Minor point, but I'd also like to add that 'adloquium' is latin for giving encouragement to someone. It syncs up well with the japanese spell name being a reference to army morale.

And yes, I'll admit the entire Arcanist questline felt quite different from the other two Disciplines of Magic. It felt like Arcanists take something of a pragmatic/'magic is mathematics' stance to magic, referring to arcane geometries and strategies (the female Miqo'te that accompanies you in particular) rather than more mystical and esoteric elements such as the Elementals for Conjurers/White Mages or 'the Abyss' (realm of the dead?) for Thaumaturges.

Also, this post just reminded me that Paladins are actually called Knights (ナイト, Naito) in Japanese. <_<