FFXV's lore behind their summons got me hoping that we could be able to delve deeper into the history of FFVII's summons in the remake. Like maybe these summons are certain spirits and souls from the Lifstream itself. Maybe if Jenova turned most of the Cetra into monsters, the Lifestream took certain souls of the Cetra and turned them into Summons like Odin or Knights of The Round.