Intresting.
To Spice up the late game in 3.8
Once the player has his kingdom the snake cult invades Pendor

with lords and armies and start conquering...and the SLC betrey marius and deliver cez to them as a staging point for the entire invasion

Put that in your pipe and smoke it
I know it`s hard and wishfull thinking and probably won`t happen but hey it`s ok to dream. It would be great to have a worthy late game enemy to battle

and it would allow you to expand a lot on the SLC as well as any other KO who would be a part of this

.I understand that this is in theory a insanly hard to implement thing. I just red on the AMA that several things for pop 4 were done and you were thinking of integrating them. And i know pop was supposed to have factions that emerge or are liberated or something ( Because KLAUS said so and a Mettenheim always speaks the truth :p ...seriously though theey can`t lie...because of the mustaches ).
And because an invasion of pendor would be cool game play wise, lore wise (snakes basically have amala sewn up ) and cool in general
BTW if such a thing should occur do the gameplay limitations allow it.
I remember way back when (4yrs ago) playing a mod (dunno wich) that allowed a dark knights faction to invade and capture and convert to their culture the relm of calradia.