Several past discussions have enjoyed consensus to import from other wikis. The most recently seeks to import from Nostalgia and Meta, the prior ones from other languages.
I realize these must be added individually, so I'll just list the ones that are currently using more than 50 templated translations attributions.
de, es, fr, it, pl ( http://en.wikipedia.org/w/index.php?title=User:Xeno/sandbox&oldid=289399214 )
Importing the history would allow us to pass the full attribution without these.
Enabling all languages, or allowing stewards to configure them as suggested in https://bugzilla.wikimedia.org/show_bug.cgi?id=14264 would be great.