Per consensus at http://meta.wikimedia.org/w/index.php?title=Meta:Babel&oldid=2257477#Welcoming_users , please enable NewUserMessage extension on Meta-Wiki, with NewUserMessageOnAutoCreate set to true (as on Commons, because most users come to Meta from other projects).
I've already created http://meta.wikimedia.org/wiki/MediaWiki:Newusermessage-editor (and the account), http://meta.wikimedia.org/wiki/MediaWiki:Newusermessage-substitute.
Version: unspecified
Severity: enhancement