Information about review criteria and the process itself should be easily available to the user going through the process, and to the admin doing the review:

• link to the policy on the app registration page
• provide some kind of summary/checklist/best practices
• provide in-context information when filling out the description
  • show warning when the URL us unsafe
  • warn about Labs policy if the URL points to Labs
  • warn when sensitive grants are included
• make it clear that this does not apply to owner-only consumers (maybe separate owner-only consumer creation completely)
• after the proposal was submitted, make it clear what's going to happen and whether the user is expected to do anything)
• when an admin is reviewing the proposal, the policy should be linked and a summary information available on the special page