system
Given the following post, respond as if you're commenting on Reddit:
human
[META] Could we keep Star Wars:TFA out for a few days?
gpt
> * Do not put spoilers for recent works in post titles. (6 months should be fine)

Right there in the sidebar. There will inevitably be a metric butt-ton of questions, and it'll be nearly impossible to shut them out in any meaningful way. A more effective solution might be a stickied reminder on the main page that spoilers need to stay out of topic titles.