Regarding the spruced-up FF7 lore:
Take it with a grain of salt. XIV's lore set out from the get-go to be reminiscent of older games and homage them as well. Ceruleum draws parallels to the Lifestream and mako, but that doesn't necessarily mean they're the same with some minor retconning.
Meteor being a spell that's usable by players is similarly questionable. After all, it's NOT just black mages who have access to this ability. Summoners who have specialized in conjuring forth the essence of a Primal can... also apparently wrest lesser rocks out of space? Wait, what? That doesn't make a lick of sense!
...just like it doesn't make sense that a monk, a specialist in hand to hand and spiritual chakras, can unleash their ultimate attack in the form of... a dozen giant sword chops from a manifested weapon of pure energy. Wait, where was that in the manual...?
I think we'd all be better off if we stopped considering Limit Breaks as canon abilities.
**
Regarding Aaron, you hit the nail on the head. You've revealed the ability to some people and they've been content to work with it. You can't ever please everybody, so wondering how you can make it work for random Quicksand RP isn't viable. In your example of some guy randomly plucking off the eyepatch, it would be more reasonable for your character to overreact and duck out of the way, maybe lose his cool (hee, puns) and get very defensive over the attempt. "In-house" RP works great for these sort of asides, in my experience.
If I wrote into my backstory that Warren was an immovable object of perfect defense and could never be seriously harmed in combat (ignore my Grindstone record for the sake of this hypothetical), that wouldn't fly with anyone in "real" RP; I could never expect the Quicksand to take it seriously and I'd just be accused of godmoding. If, though, I was RPing in a smaller circle and it came out that Warren was cursed to never be bested in combat or something, that's workable with a group.
tl;dr If you've got magic psychic ice powers, don't bust them out in public unless you want OOC bitching and complaining. There's no precedent for anything like that in the game at all, and while it's not unreasonable, it's not reasonable either.
Take it with a grain of salt. XIV's lore set out from the get-go to be reminiscent of older games and homage them as well. Ceruleum draws parallels to the Lifestream and mako, but that doesn't necessarily mean they're the same with some minor retconning.
Meteor being a spell that's usable by players is similarly questionable. After all, it's NOT just black mages who have access to this ability. Summoners who have specialized in conjuring forth the essence of a Primal can... also apparently wrest lesser rocks out of space? Wait, what? That doesn't make a lick of sense!
...just like it doesn't make sense that a monk, a specialist in hand to hand and spiritual chakras, can unleash their ultimate attack in the form of... a dozen giant sword chops from a manifested weapon of pure energy. Wait, where was that in the manual...?
I think we'd all be better off if we stopped considering Limit Breaks as canon abilities.
**
Regarding Aaron, you hit the nail on the head. You've revealed the ability to some people and they've been content to work with it. You can't ever please everybody, so wondering how you can make it work for random Quicksand RP isn't viable. In your example of some guy randomly plucking off the eyepatch, it would be more reasonable for your character to overreact and duck out of the way, maybe lose his cool (hee, puns) and get very defensive over the attempt. "In-house" RP works great for these sort of asides, in my experience.
If I wrote into my backstory that Warren was an immovable object of perfect defense and could never be seriously harmed in combat (ignore my Grindstone record for the sake of this hypothetical), that wouldn't fly with anyone in "real" RP; I could never expect the Quicksand to take it seriously and I'd just be accused of godmoding. If, though, I was RPing in a smaller circle and it came out that Warren was cursed to never be bested in combat or something, that's workable with a group.
tl;dr If you've got magic psychic ice powers, don't bust them out in public unless you want OOC bitching and complaining. There's no precedent for anything like that in the game at all, and while it's not unreasonable, it's not reasonable either.