
I'll have to echo the mindset of strictly avoiding any interaction with main storyline elements, outside of that which has been established as a phenomenon that effects more than one person and doesn't necessarily have to require active participation in events of the scenario (I.E the echo, with it having been established as something many adventurers are gifted with). My character is one of the original Warriors of Light, for example. He participated in the Battle of Carteneau, and was sent forward five years by Archon Louisoix alongside many other adventurers. He bears a connection to Hydaelyn due to his echo, but outside of that he has no real bearing on the plot of the game. He has his own story, and his own background, and that's what I focus on when playing my character. I do acknowledge that the storyline is unfolding over time, but those driving it will always be nameless faces in my canon. Even if some one claims they're the hero, it's simply not the case in my head.
Painting yourself the hero isn't really at all fair to people if you plan to roleplay with the general public. It's great if you want to keep it to yourself and your inner circles, but the second you start forcing upon people the idea that you're some magnificent hero who has saved Eorzea single-handedly, I draw the line. Personally, anyways. Those sorts of people immediately go on my list of people to avoid and/or outright ignore ICly (as much as I hate the idea), as quite frankly it's not really fair. I feel the world has such a rich and bountiful lore and culture, and riding on the coattails of the main storyline seems to put to waste all the potential for the creation of your own story. There's really endless room for creativity if you put your mind to it. For example, my character has a Magitek Prosthesis, as was mentioned in the OP. It's a driving force behind my character, and was something I developed alongside the concept of Magitek on Hydaelyn, yet it has little bearing on the world at large. Beyond this, though, it's not something I force openly on people, as not everyone agrees with the idea -- and that's absolutely okay.
Some elements tie into each other, of course. Like how one cannot technically fight a primal unless you possess the echo, supposedly. Rather, it carries great risk outside of simply being killed. The primals themselves are summoned very frequently, and adventurers capable of doing battle with them are often sent out to deal with the threats. That would be a solid example of something sort of related to the storyline that would technically be acceptable in canon for more than one person to have accomplished. Something commonplace for your seasoned adventurers.
These are just my personal opinions, of course. Bottom line, roleplay what you want. However, it would simply be silly to expect everyone to want to roleplay with you if you step over common boundries established within the community. It's quite easy to respect each others styles, and if you find yours clashes with another, it's as simple as offering an OOC apology and heading off in your own separate directions.
Painting yourself the hero isn't really at all fair to people if you plan to roleplay with the general public. It's great if you want to keep it to yourself and your inner circles, but the second you start forcing upon people the idea that you're some magnificent hero who has saved Eorzea single-handedly, I draw the line. Personally, anyways. Those sorts of people immediately go on my list of people to avoid and/or outright ignore ICly (as much as I hate the idea), as quite frankly it's not really fair. I feel the world has such a rich and bountiful lore and culture, and riding on the coattails of the main storyline seems to put to waste all the potential for the creation of your own story. There's really endless room for creativity if you put your mind to it. For example, my character has a Magitek Prosthesis, as was mentioned in the OP. It's a driving force behind my character, and was something I developed alongside the concept of Magitek on Hydaelyn, yet it has little bearing on the world at large. Beyond this, though, it's not something I force openly on people, as not everyone agrees with the idea -- and that's absolutely okay.
Some elements tie into each other, of course. Like how one cannot technically fight a primal unless you possess the echo, supposedly. Rather, it carries great risk outside of simply being killed. The primals themselves are summoned very frequently, and adventurers capable of doing battle with them are often sent out to deal with the threats. That would be a solid example of something sort of related to the storyline that would technically be acceptable in canon for more than one person to have accomplished. Something commonplace for your seasoned adventurers.
These are just my personal opinions, of course. Bottom line, roleplay what you want. However, it would simply be silly to expect everyone to want to roleplay with you if you step over common boundries established within the community. It's quite easy to respect each others styles, and if you find yours clashes with another, it's as simple as offering an OOC apology and heading off in your own separate directions.