Wouldn't it be easier to simply ban spoilers altogether from the entire forums? No spoilers in the titles, or in the regular sections, but none in the Cage as well? I realize the Cage is a "no rules" section, but that's not totally true. There are a few rules in the Cage, albeit far less than anywhere else. Why not just eliminate spoilers from the Cage as well? Many of us go in there regularly and will end up seeing spoilers that we don't want to see. Events can still be discussed, under the relaxed rules setting of the Cage, but only after they air on TV.
The updates from the main page on top on the forum page, unfortunately that is unavoidable. For some reason, though, I rarely notice them and didn't notice the one regarding this week's SD until someone mentioned it here. I never visit the main page due to spoiler issues. Just ban spoilers altogether, then if people try to not look at the updates on top of the page, problem is solved as much as it possibly can be.