primer/detonators like Mass Effect
5 different gun/component slots
6 Different rarity types
common, uncommon, rare, epic, masterwork and legendary
uncommon and up get 1-4 inscription rolls which pick from a pool of over 100 different stats
inscriptions stack infinitely and support roles can matter
Masterworks and up get an extra powerful stat ie killing an enemy causes an electric explosion etc
Very Large item carry limit/storage limit
Salvaging gives crafting tools
Find blueprints to craft items up to legendary and bp's will drop at your overall power lvl
Can't reroll properties on items
Legendary items will all reroll with different stats other than its prmary stat for that weapon.
Bosses will drop from much higher loot tables, seems you can find anything anywhere with better chances at higher difficulties.
Challenges like take out x boss 10 times will grant you a high level reward ie leg blueprint etc
Loot is instanced for each person but no trading.
Loadouts matter you can gear towards taking out trash mobs or more towards boss damage.