I have one request/suggestion for Stack Exchange sites and that is: at the end/bottom of every question's answers, the site should suggest related questions (and their answers) to look into. It would be a great way for readers to gain insights about the subject.
There's already a "Related" sidebar widget which does more or less what you describe. The questions there are chosen from the top questions in the tags on the current question, more details here: How are "related" questions selected?
You want them under the question's answers? No problem, just resize the browser window and they'll appear underneath: