Length of time to become an editor was longer than expected. Change to 10 edits spaced at least 2 days apart.
Not many contributors create a user page. Drop the requirement that a user page must exist.
More contributors share an IP address than expected, especially from schools. Drop this requirement as well.
In other words the configuration of $wgFlaggedRevsAutopromote should now look like:
$wgFlaggedRevsAutopromote = array(
'days' => 30, # days since registration 'edits' => 100, # total edit count 'excludeDeleted' => true, # exclude deleted edits from 'edits' count above? 'spacing' => 2, # spacing of edit intervals 'benchmarks' => 10, # how many edit intervals are needed? 'recentContentEdits' => 10, # $wgContentNamespaces edits in recent changes 'totalContentEdits' => 50, # $wgContentNamespaces edits 'uniqueContentPages' => 10, # $wgContentNamespaces unique pages edited 'editComments' => 50, # how many edit comments used? 'email' => true, # user must be emailconfirmed? 'userpage' => false, # user must have a userpage? 'uniqueIPAddress' => false, # If $wgPutIPinRC is true, users sharing IPs won't be promoted 'neverBlocked' => true, # Can users that were blocked be promoted? 'noSorbsMatches' => false, # If $wgSorbsUrl is set, do not promote users that match
) + $wgFlaggedRevsAutopromote;