+1 with reworking, including dueling ur own legion mates.

if i could propose an idea for duel mode, what about a turn based fighting style. 2 players agree to duel, and they have the option to either attack, or use an artifact. they can do one action per turn (this can obviously be modified in the future with modules and whatnot) and have a 30 second time limit.

if they withdraw or force quit (like closing the browser) they will automatically lose and it will count as defeat. if they are disabeld it will count as defeat. if they go inactive then they will be disabled due to their turn ending every 30 seconds. The victor will be awarded a red, a yellow or blue (they would be allowed a finishing move hack or raid), and a new BLACK badge to use in the marketplace.

EDIT: to make this more official there could be a tournament every 2-4 hours. players would enter and then be matched with other players around their combat rating. so initially it would be completely random, but over the course of a few months the top players would be matched with eachother, while newer players would fight eachother to learn. There would be 10 rounds, and you would gain minerals or artifacts for each win. if you lose to a player of a better combat rating, you get a smaller reward. if you win against a player of a larger combat rating you get a bonus reward.