Future Primals and potential implementation into lore.

[ChaoticCrimson]

To be fair, as you mentioned we already have at least three Primals (Thordan and his Ward, Shinryu, and Phoenix) who have been explicitly summoned by humans rather than Beast Tribes

To add to that, don't forget about Shiva too! Not to mention the Ascians have been known to tempting other people into attempting a primal summoning, like when they tried to convince Wilred and his group at Little Ala Mhigo to do it until the WoL intervened. The precedence for people outside of beast tribes to perform a summoning has been around for quite some time.