A perk only achieved after fully leveling up a subclass could grant that final bit of attributes to max out either armor, recovery, and agility. When gear is fully leveled, you could purchase a final upgraded which will increase defense and attack but lock out previous choices. You could equip any armor type and still be able to reach the max light level. Khostov could have an exotic variant during the final stages of development, one of it perks was known as "Ancient Ally" which would grant more super energy upon a kill and you have a chance to spawn orbs of light. Hard Light could have a final perk which made it an ARC weapon, but locked out previous choices. Warlocks could have a final perk to make it possible to max out the recovery attribute, same with Titans and Hunters, but for Titans it's armor, and for Hunters it's agility. Every exotic could have a specific task in order to aquire them. Example:SUROS Regime obtainable after bringin golden age blueprints to SUROS and making them fabricate the weapon using the blueprints. Thunderlord obtainable after defeating a Fallen Baron and looting his vault. Fate of All Fools obtainable after completing the Trials of Osiris (Not the multiplayer mode), you must complete special trials made by Osiris himself in order to gain acces to a portion of the game. 3 factions not present in the game. 5th enemy race, the one with the triangle ships. Edit: It was just a post from another person. I just posted it in feedback to ask Bungie if some things will come in time. Edit:I don't "know" anything. I've seen most of this before, but this is a repost from another person. I just put it in feedback. I've been around before alpha. Back when the forums were all praise to Bungie. Everything took a turn when the stranger handed us the pulse rifle. Activision, and Bungie have taken a lot of criticism after that. I enjoy the game, and will continue to play. The next time I repost some ideas from another person in feedback. I won't be lazy, and just copy/paste.