The salt levels
A major discussion point of the thread -and media coverage of the war- has been that military action against Iran was a huge mistake because of their ability to retaliate by closing the strait, that this could only be countered by a ground invasion, and that the Trump administration had ignored this reality before acting.
That analysis apparently turning out to be completely false, and that the military action could be conducted and then the strait forced open again by (very briefly) using US naval supremacy to apply an economic chokehold, seems like a significant development.