Hey, at last arent there 4 Bahamuth, like in FF7.^^

To your summons:

- What is it with the 5 Yalm thing? Siummons are allways by the chara, or? This 5 Yalm thing looks useless, because in most cases, are you away from enemie (aside of solo content).

- Ramuh: Looks like the thunder spell from the Blm. But, how much around the caster would be the second attack? It would need a high yalm number. Otherwise would the skill be useless (had the same problem, like the original Blizzard 2 skill, Aoe around the cvaster, but with just a short range, that it became useless, esspecial, because caster stands away from enemies -even, when the idea and look wasnt bad-).

- SHiva: a corne attack would be nice for the optic. And is something, that as good as no one has (most classes has only bombs/ circle attacks or line attacks). Most important would be the range of the attacks.

Biggest problem with 6 summons, who has there own uses:
How are you able to choice betwéen them?
Increasing the gauge to 6 jewels? Or has a switch skill, like BLM has it, to switch to the second set of gems?

In addition would i think, that one problem of the summoner is, that the summons stay to shortly. The 3 main primals are only for a few seconds there.
Instant of adding new summoners, could they maybe increase the duration the primals stay, and give them more action to do.
One complaiment is, that there skills doesnt feels much differently to all the other spells.