Alrighty, so right now if your ironman and need of a red spiders' eggs your options are pretty much Venetatis, because he drops noted eggs.... buuuuuut as a HCIM that option is pretty much a nono. So my suggestion is add red spiders' eggs as a spawn under edges trapdoor in the wildy where are spiders, so we can get them either as spawn or killing them, since they are pretty much needed later on. (super restores)
Don't know if any other ingredients are needed to be added but if anyone knows can add them in comments.
Sorry if this already has been posted as you can see i'm not a forums guy as this is my first post but since ironman has been added ingame then they should also receive some updates that are necessary for them...
Best regards.