In most StackExchange sites, new users are encouraged to ask questions. On this site, we encourage running questions through the sandbox. However, 5 rep is needed to participate on meta. It seems contradictory; new users can post questions and are encouraged to post questions by the StackExchange format, but the questions they post are hit with a comment, asking them to use the sandbox.
A possible solution to this is to have a community wiki sandbox on the main site, but that might be a bad idea. However, this might work; a single sandbox doesn't clog the question queue.
How can we fix this problem?