Answers to old questions are often posted by new users that don't know yet how to use the site. Often these answers are badly formatted and need cleanup, but quickly drop from the front page and are forgotten. I feel like these posts could use some more eyes, since many pass by without anyone fixing them.
In the 10k tools there is a list of these posts and I think it would be a good idea to make this list available to more editors, like by lowering the reputation requirement to 5k.
Also "new post by new users" and "questions with newly created tags" might be candidates to make available at a lower rep threshold.