This is literally just a fly-by theory
But I seen a post of Paimon having the same little star accessory as the unknown god that Lumine and Aether fought. But like what if Paimon was the original god but that god fought her and caused Paimon to lose not only her powers but her memories? Paimon doesn’t know that she was affected like the Traveler was?
This is just a throw away theory but I laugh somewhat at the idea that Paimon gains an Archon power that was once her own but she still stays smoll. With her currently personality she will use her authority for food