Board Thread:General Discussion/@comment-3127787-20160125125430/@comment-25739558-20160228185954

Just send a request through Special:Contact/general stating that you would like anon editing to remain enabled, but anon page creation disabled. Staff should be happy to help!

As for the Abuse filter–unless you have a very active wikia with common problems of mass spam and vandalism putting much strain on admins to clean up, Staff will generally not enable Abuse filter.