Give the possible Eureka 5.X its own weapon, and separate Relic from it

[Kalise]

Fine...

You have the raid weapon, the best weapon but hard to get.
You have the tome weapon, the 2nd or 3rd best weapon, easy to get but time gated.
You have the primal weapon, 2nd or 3rd best weapon, requires skill but can be acquired quickly.
You have the relic, anywhere from 1st place to 4th, depending on patch cycle.
You've got crafted as well, for the quick but pricey jump start.

Ok, now we've fixed that, where is this hypothetical sixth weapon going to go?

(Technically we had a sixth weapon in the form of the HoH weapon, but you barely saw anyone using it even when it was vaguely useful because grinding for it when the other options exist was a waste of time.)

Why do we need globally BiS items from every source of content though?

Why not make Eureka/HoH weapons that are BiS for the content in which you earn them while being "Good enough" to participate in alternate content?

Like, that list makes sense... Only in the content in which you already are able to earn those weapons. (Aside from Tomes which can be obtained through Eureka)

None of it makes sense for Eureka/HoH as they're not affected by you having the BiS Raid weapon. To say nothing about how the Tome/Primal/Crafted weapons also mean little to nothing in this content.

So why not have unique weapons/equipment in these alternate modes that provide progression in these alternate modes.

With then making the Relic weapon, that requires a lot of grind, end up being competitive in all content (I.e. So it has bonuses in Eureka/HoH as well as stats that are competitive with Raid/Primal weapons in regular content)

Basically making several "Tier" lists that amount to something like:

Raid Weapon >= Relic > Primal > Tome = Eureka = HoH > Crafted for Raiding/Dungeons
Eureka Weapon >= Relic > Crafted > Tome = Raid = HoH for Eureka
HoH Weapon >= Relic > Others for HoH

Just as an example.

Also, an old fashioned relic grind seems pretty redundant, as you point out a grind already exists where you can do a whole bunch of different things at your leisure in order to get a decent weapon.
Maybe alter how the augmented version is acquired, slap a bunch of particle effects on it, call it a day...

Ehh... It's not redundant if you make the grind somewhat content. Like, I quite enjoyed the story alongside the Anima relic about creating a soul and infusing it into a weapon and then allowing it to grow. If they fleshed out more story surrounding the different stages of grind on the Relic, it would be very justifiable as content.

Especially if the Relic had the unique properties of being universally competitive, compared to each type of content's potentially more niche items.

You could even make it so that the Relic has you doing all kinds of content too. So that, while you can earn a BiS weapon from just doing your preferred content, to get the Relic you might have to go a little outside your comfort zone for some stages (Though, ideally, not too far. Like, don't put like Savage raids or Hydratos content into it. But maybe some dungeon farming, a few crystals from Eureka, maybe some item from HoH, some FATEs. Perhaps the return of Battlecraft Leves and those Ishgard 10 Leve allowance things)