I'll start things off with an idea that I had. You know how the "darkness encroaches" and prevents our re-spawns? I was thinking it would be cool (if story allows) if something along the lines of "the light shines" on a certain gun class. This would give that particular gun class a buff for a certain amount of time while the light is shining, like a 50% increase in that class' damage and like a 60-75% boost for exotics in that class. This would effect all players across the vast world of Destiny at once, no matter what game mode, e.g. Raids, patrols, strikes, pvp, etc. This could obviously be extruded to the opposite effect of "darkness enshrouds" a different gun class, debuffing it for the same amount of time, again effecting all players everywhere at once. These effects can either occur staggered or at the same time. This would throw a nice little curve ball in the game and make it feel more alive and unique befitting people who bring different tools to get the job done no matter where they are in the game, and possibly forcing people too stubborn to use other guns to try to use something different for a change.