BioWare producer Scylla Costa says: “You unlock new Javelin suits at level 2, 8, 16, and 26. So when you have your second javelin suit, you’re going to start getting your first rare items like the blue loot drops. And from level 10 to 20, you’re getting the epic loot drops. Your goal then is to start crafting better weapons and gear because by now you have the blueprints and you’re doing the stronghold activities, which give better rewards.”
Source: N4G PC Anthem: BioWare dev talks loot, weapons, and endgame