While the base game is legacy, its features have been integrated into newer titles:
: The signature stealth feature can be "unlocked" as a functional gear piece in Ghost Recon Wildlands through the Operation Silent Spade crossover mission [15]. File: Tom.Clancys.Ghost.Recon.Future.Soldier.zi...
: A prominent community tool developed by KilLo/DecentLoser on GitHub allows players to re-enable multiplayer [9]. While the base game is legacy, its features
For a look at how the original 'Future Soldier' features like Gunsmith and tactical gadgets were first developed and demonstrated, see this developer walkthrough: Ghost Recon: Future Soldier - Developer Demo YouTube• Jan 26, 2012 Restoring Multiplayer Functionality
If you are looking to work with the game's files (often found in a .zip format in modding communities), here are the primary ways users currently "develop" or restore features: 1. Restoring Multiplayer Functionality