I understand your definition of a MMO, but Destiny has not properly fit a correct MMO type of model, and that's good to me because this is not the type of game Bungie decided to make with Destiny. In typical MMO's it is commonly accepted (but not necessarily a rule) to leave old gear in the dust because there's both a ton of gear, and because the rarities of gear is ranked by level. Destiny just isn't that kind of game because the lack of a broad access to a large impersonal arsenal, and because they don't have this ranking system. There's other reasons of course, and they might be introducing this ranking system in TTK, but then they wouldn't be implementing it properly because there's no exotics at different levels such as level 40 exotics being better than level 20 exotics. With all that said, I am (hopefully) obviously for ascension of year 1 legendary gear.