I can help you get started. First, any year 1 exotic piece of armor or gear you don't use, dismantle. If you ever get the urge to use them, you can get them out of the kiosk. Otherwise, they are wasting space in your vault. You have three murmurs, dismantle two. You have two vex mythoclasts, dismantle one. For your titan: You have two crest of alpha lupis, two ruin wings, two insurmountable skullforts, and two helm of saint 14s. Delete one of each of these. I would reccomend deleting most of your titan marks as well, these will serve no purpose to you, especially the iron banner one. Your hunter is in a much better situation, but again, dismantle some of your class items, you don't need them. Warlock :You have two claws of ahamkara as well, dismantle one. Ultimately, i would deleted everything thats not raid gear, but i can understand a bit of sentimental value keeping you from deleting things. Exotics however are always repurchaseable after you have found them, and any that you don't use that are sitting in your vault are taking up space.