I agree. Updating language files and so on is very needed.
There are so many hacks around that updating language files for each hack can be much work... so I wonder... Would it be possible to come up with a standard "addon.php" language file for every language?
For example, in all pages UBBThreads would check for the language file in question (example "newpost.php") AND the addon.php just as it now does with "generic.php" (I believe).
This would mean that instead of having to mess with all language files you would only mess with "addon.php" and just add things there, resulting in less work.
What do you think?