See idea at https://meta.wikimedia.org/wiki/Grants:IdeaLab/A_place_to_work_together. If you'd like to develop the Lockdown extension, you can get a few thousands dollars to do it. If you use the Lockdown extension, please document in bugzilla reports what's missing for it to satisfy the requirements.
Nemo
mediawiki-l@lists.wikimedia.org