Not enough to come back, make Destiny 2 fun like the golden years of Destiny 1. Maybe add some meaningful armor and weapons and stop bringing back old and reskinned weapons. How about making Iron Banner mean something.
I think the key word was fun. My Son and I both have been playing since the beta days and Destiny was fun to play. Even as we ventured to other games, we would go back and play strikes or a Nightfall, because they were fun. Remember when the Iron Banner actually meant something