Yes.
No.
Yes to both.
Yes, disallow giveaways but allow heavily editorialized headlines.
Yes, disallow heavily editorialized headlines but allow giveaways.
No to both.
Yes, make a secondary subreddit for disallowed content.
Yes, push disallowed content to an already established subreddit such as /r/PlayStation.
No, don't bother promoting an alternative subreddit for disallowed content.