While they may not add anymore story-centric primal fights similar to how that have been doing, or at least until 3.0 or later, I think it would be a nice addition if they began adding more primal fights similar to Odin, hell I don't care if they call them primals or if they say they are just ancient and powerful beasts like Behemoth.

It would be nice to have one of these types of rare spawn monsters for each of the major areas such as Odin is in the Shroud and Behemoth is in Coerthas.
They would spawn in their designated locations under certain conditions, such as specific or special weather conditions.

Here are some that I would like to see and maybe where they could appear.
- Phoenix ---> Thanalan
- Fenrir ---> New area?
- Kirin ---> Doma?
- Valigarmanda ---> Mor Dhona

Here is a link to a list of FF summons.