A "Spoiler images and summary" thread without "Spoiler discussion" thread might work.
I've been here since 2011
and a decade of spoiler discussion has not soured my enjoyment of the story whatsoever.
Spoilers discussions tend to be more intense because we have less information. Less information is the absolute lifeblood of discussions. Because people are trying to piece together something coherent from the little we have.
Taking that away, would just be..boring.
As an example, look at how not a lot of people really discuss the full chapter.
I say, let us have our fun.
If you don't want to see the spoiler thread, maybe log out of account and browse the site as a guest. Or more shocking…ignore the spoiler thread