I get your meaning, but in the X6 sealing, X has no part. There's no tearful goodbye, no explanation, no inclusion of X in the scene at all besides in reference. It doesn't seem like the kind of think X would be absent from, which begs the question whether Zero didn't fail to consult him both times. We know X only caught the end word of the news and gets there just in time to say goodbye the second time around. During which, Zero tells X how much he trusts in him and what he believes in, so at least some level bequeathing is acknowledged for sure in this sealing.
In effect though, Zero is entrusting the world to X with either sealing. To X's protection, to X's judgment, for X to lead the world to peace and for Zero himself not to become an interference of that.
However, at the time of writing, X's words were surely in reference to X as "the superior hunter" who can take care of things without Zero around.
TELOS on the other hand is not about that, it's about peace having been achieved and Zero being the only aspect that remains to repeat the cycle of bloodshed. Zero was not talking about trusting X to take care of the world for he's already done so. He's solely talking about wanting to trust the humans in regards to his own evil.
Battles, not one large one but a long stream of sad ones. Sad and difficult doesn't have to mean it was difficult for him to defeat whoever these were, they can be sad because the circumstances for each should have been avoidable, or difficult because the ceaseless destruction of robotic life feels unending and such toll in what should be a time of peace weighs heavily.
I wasn't talking about difficulty, I'm talking about quantity and frequency. No matter how you cut it, X's words fit more toward X6 than TELOS. Countless numbers, day after day, that is only true for the Irregular Wars. In the unstable times of Neo Arcadia's beginnings, we are dealing with enemy quantity and frequency relatively insignificant compared to the Irregular Wars. The irregular wars are a large stream of sad incidents, whereas the unstable beginnings of the utopia are more isolated incidents that occur at random.
Which is pretty odd, isn't it? What non-combative usage do Phantom's shurikens fulfill? To ride them through the air while looking badass...? I guess.
Phantom is the one of the Big4 you have to take with a certain grain of salt. They likened it to the original Rockman's theme of all the bosses having a certain job. Phantom being X's personal safeguard, a combat orientated job, he follows the theme but at the same time can be seen as an exception.
But in that regard, I think you're quite right. It's Dark Cross that's listed, which has clearly a practical purpose in terms of mobility. As this can be of vital importance to protect X from a far. You can say this is similar to how Leviathan and Harpuia's use of their weapons to manipulate the ocean currents and weather respectively.
As for Fefnir, his occupation is rather unspecified in all the sources I have at my disposal... I can only assume it's quite similar to how later the "Scorched Earth Operation" was carried out.
If the Shining Arms is a myth, there isn't much of a scheduled part to play...
The thing about the Shining Arms.... Aren't they the weapons used by the top Irregular Hunters from the
Irregular Wars? By the time the Elf Wars comes about, the Irregular Wars had been thought as officially ended. If you take the Shining Arms literally, we say their creation and activity as Hunters even precede the time the lone hero X ended the war. But that outright conflicts his status as
the lone hero. Therefore, I see just grounds to consider the Shining Arms as mere myths. Elf Wars, however, is after that, and thus a completely different story altogether.
Of course, it's always quite uncertain whether or not Elf Wars is its own distinct event or not. I feel that the times it's considered to be the same as the Irregular Wars, are part of the way history was covered up. The imagined scene of the irregular wars sparked by the Sigma Virus turning to Cyber Elf abuse and X ending that war using Mother Elf is all too convenient for Neo Arcadia. So, maybe the Shining Arms is list is accurate in that the Big4 fought in Elf Wars, but the lie is that the Elf Wars and Irregular Wars are one and the same. Which once more ties back to the contradictory time of Neo Arcadia's founding.
Instead of wondering what in the games warrants their inclusion in Elf Wars, I'm instead going to cover how it's possible, which is also what I alluded to in my previous post.
After the end of the Irregular Wars, the creation of the utopia Neo Arcadia's appears to be the most important matter at hand. The Big4 were created for Neo Arcadia, after all, Leviathan was made to win back
the favor of the sea goddess and carried out her operation from the main shaft of
Neo Arcadia.
Between Neo Arcadia's founding and the Big4's creation, the former takes considerably more time than the latter. As construction of Neo Arcadia began at the center of rebirth, the Big4 were also created. However, when Elf Wars began, Neo Arcadia's founding was pushed back until that calamity was avoided. That is how the Big4 could become Hunters despite their purpose of creation being different; the Elf Wars was such an unexpected event that their creation purpose was overruled before it had even begun.
In similar vein, if we are to think of the Big4's creation as even earlier, it should be remembered that the creating of Neo Arcadia was a long term project that began during the Irregular Wars. After all, Project Elpis, the project to end the war and the research carried out in the research facilities in the four forests surrounding Neo Arcadia lie at the root of the creation of Neo Arcadia. Likewise, we have to account for Neo Arcadian logos in the distinctly older facility of Vile's lab and even on Vile's very person.