Co-op is a big (and fun) part of this franchise and that wont change anytime soon. Playing in a Fireteam has resulted in some of my most fond memories in the game. This brings me to the point of this post, the cut scenes. Destiny has some beautiful cut scenes but I have 1 issue with them. I play with my Fireteam and the game treats me like I am alone. I want the Fireteam shown in the cut scenes. It's not all to complicated to add 2 more guardians standing behind yours while you progress through the story. It can be done 2 ways.
Add the 2 guardians in the background and keep your player as the one interacting in the main plot (Destiny already makes your character the one in the cut scene you see if your in a team)
Make the Fireteam Leader the one who interacts with the main plot and have the cut scenes slightly vary depending on how many are in your Fireteam (this would be a little more complicated but feel like your team actually matters in the story)
TLDR: Add the Fireteam to the cut scenes and make us feel like we are part of a mass of Guardians like we are.
Edit: a little bit of formatting fix
Edit 2: WOW I just got back on and had such a positive response. Glad everyone liked the idea. Yay Front Page!