I like how the legendaries work in GW2. They are statwise not any different than the highest craftable items, but you need to do a series of collections in order to obtain one and usually cost quite a bit of resources. But you get really cool looking weapons and armor as a reward. Would be nice to see something like that in Fractured too. Some hidden side quest or something. Probably best to have it as a "wardrobe" unlock. Would be a pain to get killed and lose your legendary stuff.