Also, I'm not sure if posts in megathreads are too profitable for advertisers, even if they are quality megathreads. Unless, apart from posting in it, you are also the creator of the thead, as LoyceV does.
Why not?
Advertising becomes effective when a person repeatedly sees the same brand advertised.
If the content of the topic, regardless of its size, is content with quality and updated, the advertising presented is always an opportunity to promote the product.
In short, what I think is important is not the size of the topic, but its content.
Of course what you did was a suggestion, which icopress will be able to analyze. I'm just sharing an opinion, about this kind of rule that I don't think is the best, although it doesn't bother me.
