
After about 200 hours in The Witcher 3 and its DLCs, I can't say I was left thinking "There should have been more", but as it turns out we did all play a somewhat slimmed down version of Geralt's adventures.
In addition to an enormous number of bug fixes, the Brothers in Arms mod by Nexus Mods user MerseyRockoff (as well as a long list of collaborators) aims to restore and rebuild as much cut or inaccessible content as humanly possible. For the most part, we're talking about relatively minor elements: books, journal entries, item descriptions, and especially lines of dialogue that could be found in the game files but were never properly implemented by CD Projekt Red (though they certainly add up!).