The Sandbox for Proposed Challenges is a great way for people to get feedback on challenges and make sure they are not duplicates, are clear, and are ready for posting before they post it to the main site.
However, with over eight thousand answers (over three thousand undeleted answers), a lot of which are posted, discarded, owned by inactive users, or otherwise no longer relevant, it can become difficult to navigate (especially for people on mobile).
We previously retired and remade the Sandbox periodically, but we stopped doing that to keep it all in one easily accessible place.
There is a problem with trying to move the sandbox which is that a lot of things are dependent on it being question 2140, including our site's info box, the sidebar when asking a question, several bots, etc, and moving the sandbox can cause a lot of unintended damage.
Thus, here is the discussion: what should we do about the Sandbox?
Please provide your opinions below. I am intentionally not offering any solutions or direction, as I want to see what the community has in mind. "Do absolutely nothing" is also an option - keep in mind that we've had this current model for years and our site hasn't burned to the ground, so it's possible no solutions solve more problems than they create.