How would the plot now be different if Jay had joined the F5 in S3?

Suppose that Nokt was impressed with Jay (for some reason) and chose to recruit him as someone with experience from the current age. He kept using Shatterspin and shattering his goodness. How would he have interacted with the ninja in the season? Would he have pushed back against Thunderfang, anticipating his betrayal? How would that have changed anything? Or if he hadn't and he became spectral like the others, what if he commanded a spectral invasion and met the ninja again, and then they...