I miss this Primal

[Orbital-Dragon]

Or just add a lot more Primal fights, assuming they simply went with only previously well-known summons/eidolons/guardian forces.. the list is quite large:

Asura
Remora
Catoblepas
Ragnarok
Hades
Kajata
Brothers
Doomtrain
Eden
Pandemona
Atamos
Ark
Anima
Yojimbo
Magus Sisters

Pretty much all of the Final Fantasy 12/Tactics Summons (Although I think those would be much better done as an entire expansion. Imagine sailing to the distant lands of Ivalice to continue saving the world)
This is also excluding a couple dozen others that I feel are already in the game in a different form such as Sylph and Quezacotl (Already having Ramuh and all). Not to mention I am sure there are some young and hungry programmers with great ideas just waiting to be called on.

[Cyrusskorrey]

Asura
Remora
Catoblepas
Ragnarok
Hades
Kajata
Brothers
Doomtrain
Eden
Pandemona
Atamos
Ark
Anima
Yojimbo
Magus Sisters

Of your list these Primals have already made an apperence:

Catoblepas 2nd boss of Halitali Hard
Ragnarok Warrior's relic weapon
Kajata a Boss in the MAR Quest Line
Brothers Minotaur appears as the 2nd boss in The Fractal Continuum
Doomtrain is mentioned and his tracks can be seen in North Thanaland
Atamos (Atomos) is a reoccurring boss in Crystal tower (in 1.0 he showed up to drain energy from aetheryts)

I have a more comprehensive list of summons that are in FF14 however as of right now sharing the list would
cause major spoilers for ARR and HW expansions.

[Amelia_Pond_Behemoth]

Ragnarok Warrior's relic weapon

I don't see this as a very good argument. Ragnarok was both a weapon and an esper in FF6.

[LineageRazor]

Eden

I'd like to see Eden make a comeback to Final Fantasy someday. Probably my favorite of all the "holy crap!" summons from any FF game. XD I wish they'd gone into greater detail in that game as to just what Eden was supposed to be; there's hints certainly, but not a lot of concrete info.

Like Alexander, though, it likely wouldn't work well as a standard Primal battle. FFXIV probably isn't the place for Eden.

[Lee-Akira]

I'd like to see Eden make a comeback to Final Fantasy someday. Probably my favorite of all the "holy crap!" summons from any FF game. XD I wish they'd gone into greater detail in that game as to just what Eden was supposed to be; there's hints certainly, but not a lot of concrete info.

Like Alexander, though, it likely wouldn't work well as a standard Primal battle. FFXIV probably isn't the place for Eden.

It could be the next raid like alexander. xD but true, Eden was awesome on FFVIII,