When you enable TranslationFile feature in app.json & build your project it generates g.xlf file for all objects & their elements.

It's an issue, when you maintain big project and want to translate just few customer facing reports. For e.g. we do have a project which consists ~5500 objects which results of 25MB translation file. But, we would like to translate only customer facing reports ~150 objects.

Add possibility to limit translation scope.

1. you could add new parameter to each object "GenerateTranslationFile" with default value = Yes
2. you could add some json file where we could specify which files to use for generating translation file, and use it with compiler. Downside, json file would not catch object renaming.