Brigading was an issue and so was suppression of divergent opinions. I think by filtering and ranking things based on my WoT I fix both:
If crypto-bros invade my bitcoin sub with whatever spam, my client will sort them all the way down because my follows are not crypto-bros. I would still see them but I could also filter them based on my WoT's down-votes.
If I post on a personal finance sub about bitcoin, my follows will see it and so will those inclined to explore beyond their own follows.