Your code doesn't need to be finished to go into the LAVAcr - infact, code snippets are more than welcome, as long as they're demonstrating something that's useful to the community at large. When you post to the LAVAcr, a new "support" thread is created along with the submission, so users are envouraged to make suggestions, and you, as the submission poster, have the ability to upload new versions as the submission matures.