Hello,
The files in the languages/messages/ directory are quite big and currently altered every day. Yesterday, I had to bisect a bug and most of the delay was caused by fetching the languages files.
I do not understand the purpose of this daily update, does it serves any specific purpose? I do not feel like we require up-to-date translations in trunk.
I have a similar issue with not so much edited extensions for which the log is mostly i18n translations thus hiding the real code commits.
That was just my Sunday morning 2 cents.