I hope I'm wrong, but the Zodiac weapon quests..

[Zumi]

So it goes, Relic 80 < Relic Zenith 90< Relic Atma 100 < Relic Animus 100 < Weathered Zodiac 100 < Zodiac 110

[Kiroh]

So it goes, Relic 80 < Relic Zenith 90< Relic Atma 100 < Relic Animus 100 < Weathered Zodiac 100 < Zodiac 110

I was thinking it went more :

Relic >
Relic Zenith >
Relic Atma or Relic Animus (depending on what stats you wanted the final weapon to have) >
Meld with Weathered Zodiac through Gerolt >
Zodiac 110

Though really we could both be completely off-base and the Atma and Animus could be part of the relic upgrades while the Weathered and 110's could be part of some new weapon entirely like Gerolt's Masterworks.

To be honest we just won't know for sure until either SE explains it, or the patch goes live.

[Kiara]

Relic >
Relic Zenith >
Relic Atma or Relic Animus (depending on what stats you wanted the final weapon to have) >
Meld with Weathered Zodiac through Gerolt >
Zodiac 110

Related question:

Does anyone else feel slightly disappointed that Yoshi P's promise of a more extended / intricate quest for Relic upgrades (Zodiac Weapons) caps at i110 vs. the Allagan Weapons in 2nd Coil being i115?

I know he said this quest will continue in Patch 2.25 and 2.3, but it almost feels like at this pattern (from 2.0's 1st Coil, and now 2.2's 2nd Coil) that the Coil Weapons will always be ahead of Relics? What's the point of an elaborate "long goal quest" (w/ grind?) if it's always inferior to the Coil Weapon each patch?

[Nayto]

Related question:

Does anyone else feel slightly disappointed that Yoshi P's promise of a more extended / intricate quest for Relic upgrades (Zodiac Weapons) caps at i110 vs. the Allagan Weapons in 2nd Coil being i115?

I know he said this quest will continue in Patch 2.25 and 2.3, but it almost feels like at this pattern (from 2.0's 1st Coil, and now 2.2's 2nd Coil) that the Coil Weapons will always be ahead of Relics? What's the point of an elaborate "long goal quest" (w/ grind?) if it's always inferior to the Coil Weapon each patch?

What? So fighting a fairly tough boss with only one member of your party getting a drop isn't a long term goal either?

Unless the mathematician graces us with whatever the 'optimal' path is for progression, until then, the zodiac weapon sounds like the entryway to evening the odds for this battle.