I know this sounds crazy, but hear me out. Let me know if others are talking about this too. I'd love to see what others think. So... we have this new [i]infusion system[/i] in Destiny. The point of that, is that weapons and armor will drop (from things like leveling factions) that have different light levels. [u]I think there is a good chance that Destiny's new infusion system is that what drops will at least somewhat depend on what rank/light level YOU are.[/u] Especially since Bungie has admitted the RNG is based more on what you have now. Think of it like any other RPG, or how blue weapons and armor worked while ranking up during Year 1 Destiny. It slowly got better as you ranked up, giving you stuff just above what your rank could attain. [b]I'm suggesting that Legendary armor and weapons will work this way in The Taken King. [/b] IF this is the case, then you would NOT want to completely level up your Dead Orbit, Vanguard, and Crucible factions all at once because it will give you RNG gear based on your low current rank/light level. Instead, there are two other options: A. Just rank up one of them, grab that gear for a higher light level (if you can equip it), and then continue on ranking up the other ones as your rank/light level go up. B. Complete the story missions. Get to rank 40. Then complete your faction levels and get gear that you can wear [b]ONE AT A TIME[/b] so that your light level is going up, and you are turning in bounties at the same time. This is all speculation, but I'm curious to see what you guys think. We will at least somewhat know how this all works once TTK hits tomorrow and we turn in our first package, but I feel like it could go a lot of different ways. AT MINIMUM you could level up only one faction to begin with just to see what kind of stuff it gives you and make up your mind from there. :) [b]tl;dr[/b] There's a chance leveling up factions right away might give you [i]lower light level [/i]gear than if you did them one at a time and ranked up first. [b]EDIT:[/b] I should clarify, none of this will matter if you are just taking your time through the story and having fun. Because all the gear you get from faction drops will still be able to be infused later on. This is more for the sake of efficiency and for those going for world's first in the new Raid. :) [b]EDIT2[/b]: As others have pointed out, you will know this theory is wrong or right the second you level up your first faction in TTK. If it is the same light level as vendors are selling in the tower, then this theory is wrong. However, if you level your first faction and you get lower light level than what vendors are selling, then you can assume this theory is correct. :) Just check it after your first level up package. [b]EDIT3:[/b] There is gear already in the destiny database that shows this theory is most likely wrong. The Destiny Armory shows vanguard gear/crucible gear/faction gear at 280 light level. Some items says 260-290, but not the faction gear. Therefore it would be safe to say you get the same light level no matter what on the faction gear. I would still level up your first one with caution, and if it is true than carry on guardian! :)