We should ally with the Garleans

[Sacerdos]

Aside from those two however there arent any examples of non beastmen summoning primals. If we can stop the Ascians for good then it would be logical to work out a deal with the Garleans. The beastmen still retain knowledge on how to summon primals but nobody else does aside from the Ascians.

I think you need to read about how pre-ARR FFXIV ended or watch the Binding Coil cutscenes.