My simple explanation that sorta debunks the idea is this. Garleans cannot use magic at all, they still blow up just like everyone else when someone wills fire at their head. One can argue that the burny burny face fire is fire for all intents an, is magically fueled via aether but is IS fire. It still burns and lights stuff up, and goes poof when it runs out of fuel.Â
Thematically, the concept might need some work. As some have stated, being resistant to aether means no magic healing, no abilitiy to use aethereal weapons and equipment, no ability to use the crazy crystals to craft things, no ability to teleport or return, no ability to unlock chakras/ channel darkness/or use ninjee bits. The FFXIV world is very high magic/aether. It seeps into everything and reaches everywhere, even the most seemingly mundane parts of everyday life. Not saying it is a horrible idea, but one needs to delve into how much it would SUUUUUUCK to not be able to do most of the things and adventurer or even every day person takes for granted. Anything else would read to me as just trying to have a trump card when someone throws fire at the face, and gloss over the pretty huge drawbacks.
Thematically, the concept might need some work. As some have stated, being resistant to aether means no magic healing, no abilitiy to use aethereal weapons and equipment, no ability to use the crazy crystals to craft things, no ability to teleport or return, no ability to unlock chakras/ channel darkness/or use ninjee bits. The FFXIV world is very high magic/aether. It seeps into everything and reaches everywhere, even the most seemingly mundane parts of everyday life. Not saying it is a horrible idea, but one needs to delve into how much it would SUUUUUUCK to not be able to do most of the things and adventurer or even every day person takes for granted. Anything else would read to me as just trying to have a trump card when someone throws fire at the face, and gloss over the pretty huge drawbacks.