I have some information about dialog that I have not seen be discussed anywhere, that I would like to throw out there.
In Destiny 2 there are a lot of “nods” to returning players from Destiny 1, these nods come in the form of alternative dialog. I can give a specific example by talking about the mission “Spark”. Me and my brother have started playing Destiny 2 together, him being a brand new player with a brand new PSN account where as I have played since dark below. While playing the mission Spark at the same time, in the same room, I herd a discrepancy between our dialogs. When you see the Fallen for the first time in the mission and the ghost says “Those are not any house colors we have ever seen” in his game it said something along the lines of " Those were the Fallen, scavengers that worship machines"
These sort of alternative dialog options happen all throughout the game, we have noticed. Another example would be when Cayde is talking about the Tank. “Are we talking Gjallarhorn special, or Ikora philosophy lesson special?” he has said in all three character playthroughs of mine, but in my brothers it just says “How special are we talking?”.
There are several more I can think of put this post is long already, please forgive me, I have never posted on a form before and can not provide evidence because I am at work. Let me know if I have broken any rules, I just really wanted to share this. Thank you!