We all know and love the Sandbox. It's one of our best features. But in the body of the Sandbox, I noticed this:
This is a community-maintained list of the most active Sandbox submissions, sorted by major contest type. Add an entry to the top of this list if you add a new submission or update an old one. If you don't have enough reputation to edit questions you can ask in chat for a higher-rep user to add your submission for you. You may include a [status] indicator and tags to categorize your submission.
This means that you can edit to update your submission, or ask someone to do it for you. But if the goal is to have the community keep it maintained, then why isn't it a community wiki question, which would allow people with 100+ rep to edit it, rather than needing 1000+? If the problem is vandals, you would still need 100 rep, meaning that people trust you enough. The answers being CW as well would mean that it would both be better for a testing ground, as you would not gain or lose rep for good or bad ideas (which I don't think happens anyway), and that the answers could be deleted a week after posting, which means that we wouldn't have so much clutter from posted answers from a long time ago. And even if something bad does happen, rollbacks can fix posts that have been vandalized, and we already punish things like that.
There appear to be a lot of upsides to making this CW. So why isn't it a community wiki question?