BLUE MAGE NEW CONTENT

[Seraphor]

Just a few examples of what level 70 LB spells could look like:


Ame-no-Murakumo
Learned from: Susano (Pool of Tribute) / Gilgamesh (Kugane Ohashi)
Cost: 1 LB Segment
Cast: 4s
Recast: 240s (Shares a recast with various other spells (all LB spells))
Effect: Executes a single target attack with a potency of 3000. (physical damage)

Trine
Learned from: Kefka (Sigmascape V4.0) / GoGo (Masked Carnivale, stage 40)
Cost: 1 LB Segment
Cast: 4s
Recast: 240s (Shares a recast with various other spells (all LB spells))
Effect: Delivers an area of effect attack with a potency of 2000. (astral magical damage)

Atomic Ray
Learned from: Omega (Alphascape V3.0)
Cost: 1 LB Segment
Cast: 4s
Recast: 240s (Shares a recast with various other spells (all LB spells))
Effect: Delivers a line area of effect attack with a potency of 2000. (umbral magical damage)

The One Dragon
Learned from: Yiazmat (Ridorana Lighthouse)
Cost: 2 LB segments
Cast: 1.5s
Recast: 360s (Shares a recast with various other spells (all LB spells))
Effect: Reduces damage taken by all party members by 50% for a period of 10 seconds. Range: 10 yalms

Eternal Flame
Learned from: Suzaku (Hell's Kier)
Cost: 2 LB segments
Cast: 2.4s
Recast: 360s (Shares a recast with various other spells (all LB spells))
Effect: Restores 50% HP and MP of all nearby party members. Revives any KO'd allies. Range: 10 yalms


These LB spells wouldn't consume the entire LB when used, instead they'd only consume their segment cost, retaining the remaining gauge.
Here, the Tank and Healer LB's can compete with conventional Tank/Healer LB3's, and it only takes 2 segments instead of 3 due to a party full of BLU's inevitably resulting in slower limit gauge generation.
The DPS limit breaks are a little more powerful than conventional LB1's, however the LB segment retention allows up to three people to use these DPS LB's at once, the total damage of which would equate to roughly a conventional LB3.
This could allow BLU's to partake in Ultimate's. However with unique rewards attached and not acquiring the conventional weapons and titles from playing with regular jobs.

[AnotherPerson]

Just a few examples of what level 70 LB spells could look like:

Where's BLU's LB3 - Cosmic Memory? Alphascape 4.0's Cosmic Memory is the best example of a Limit Break and I'm surprised you didn't include that.

[Seraphor]

Where's BLU's LB3 - Cosmic Memory? Alphascape 4.0's Cosmic Memory is the best example of a Limit Break and I'm surprised you didn't include that.

LB3 would be unnecessary in this system, and I already took one from Alphascape, but sure, there are other options.

[Exodus-E]

Just a few examples of what level 70 LB spells could look like:


Ame-no-Murakumo
Learned from: Susano (Pool of Tribute) / Gilgamesh (Kugane Ohashi)
Cost: 1 LB Segment
Cast: 4s
Recast: 240s (Shares a recast with various other spells (all LB spells))
Effect: Executes a single target attack with a potency of 3000. (physical damage)

I disagree with this one in particular.
BLU shouldn't learn the ultimate attacks of Primals (that should be SMN's job).

The rest of your list is legit, though.

[Seraphor]

I disagree with this one in particular.
BLU shouldn't learn the ultimate attacks of Primals (that should be SMN's job).

The rest of your list is legit, though.

A fair point, however:
Summoner is never going to learn anything from Susano at this point.
Gilgamesh learns it, and he's basically a Blue Mage.
There should be something you can learn from Kugane Ohashi (but not exclusively, due to the entire Hildebrand questline gating it) and this would make the most sense to me.

Although... Stormsplitter could also work (Susan uses Stormsplitter, Greg uses 'Epic Stormsplitter' for basically the same effect)

Another possibility is something entirely different for the LB spell, and then a regular spell 'Inoshikacho' which is learned from both Yojimbo in Kugane Castle, and Gilgamesh in Kugane Ohashi. Like a Timebomb AoE spell.