Let us be quite frank here though, the likelihood of any new player even bothering with the relic weapon questline when they need to start it from scratch at level 50 with a level 60 cap ... they are not going to do it.
Even at present it would take a new player months upon months to reach Zeta which is still only a level 50 weapon. (iLevel is not something most players outside of FF14 recognize, they see it as a level 50 weapon on a level 60 character.).
It would become a dead questline, obsolete and considered nothing short of pure masochism to do for a new player. And it would be consistently inferior to all other weapons that a level 60 would have access too, so it'd be punishing to the extreme and the relic questline would be dead. Lemme put it to you this way, the only way this weapon could possibly be lucrative is if it provided a 20% increase in healing/dps/tankiness/ whatever your role cares about. Even then the MONTHS of grinding... not worth it when you can spam dungeons for even 2 weeks solid (exaggeration by far) and get a roughly equivalent item.
I played FF14 ages ago (well over a year) and even then the questline was daunting with the ATMAs alone being incredibly discouraging... the quest has only gotten longer and even more punitive since then. Expecting anyone to continue that hellridden grind just to hit zeta (a level 50 weapon) and then have to do yet another link to get a level 60 weapon would be considered absolute tedium to anyone. It would basically be invisibly barred, the final relic weapon, to only those who already have Zeta- it'd be considered lunacy for a newcomer to tackle that incredible glacial task.
But anyhow why I bring myself up as the example is because I am NOT going to do the relic weapon line, even with the chunk I finished before (which was a hefty and incredibly painfully long experience) I would never in my life consider finishing it to Zeta at this point. It is excessive and punitive.