The Expertise is a complex system but the basic idea was to add a feature for player to get more power.
(Expertise Level and Proficiency Rank are account-wide, so progress will carry over between each player’s Agents.) And as they gain Proficiency with more items, they’ll raise their Expertise Level, which in turn lets them raise their equipment to a higher Grade.
#THE DIVISION 2 RELEASE TIME UPGRADE#
Once they’ve maxed out their Proficiency Rank with an item type, they’ll be able to upgrade its base stats. As they use items, they’ll become more proficient with them. Players can build their Expertise by using any item in the game.