In the Wizard to create or update an MVC project, and possibly other wizards, please add support for choosing which cultures that you want to include.
This could be done by adding checkboxes in a tree where you could at first level choose language and then expand and choose country/region, since the files follow the format:
<language code>-<country/region code>.
Most people probably only use English and/or their native language, so please make this a choice in the wizard.
As an example. In one of the latest versions of the framework, the folders for cultures and messages contain 1786 files in total. Out of those we only need 2, the ones for our native language.
Slowly installing and then manually deleting 1784 files in Visual Studio for every time you run the MVC wizards, is a complete waste of time for such a common scenario where you know whihc languages that the app should support.