Cant get materials when postgame starts?

[Jevmen]

3/4 regions closed, some under quite demanding requirements, can i just never get Crystals or Silk anymore? is there no way to play the normal variants of the regions?

[RenWyvern]

If you're unwilling to sacrifice your most loyal followers, I'm afraid not.

Personally, I wasn't willing to sacrifice the followers I already had at first, so I indoctrinated a few specifically to feed to the doors- only for a jerk to get on my nerves a few too many times and get fed to the Anura door, and a disciple tried to kill my spouse so they were fed to the Silk Cradle door. Only one of the newly indoctrinated followers ended up getting fed to a door, the others got to live.

[Azrael]

There followers who were born to be sacrificed (literally if you breed them... )
Followers with Faithless, Sloth, Jerk, Hot Tempered, Snorer, and of course Spy are all Door/Midas/Fox feeding materials