Loot
The first D1 exotic heavy weapon to return in D2
The first competitive mode in D2
Trials of the Nine
This Destiny 1 raid weapon did not return with its raid, due to its archetype not existing in D2
Atheon's Epilogue
This is the name the Hive's original species
The Krill
The original voice actor for Ikora
Gina Torres
The names of Thunderlord's Solar and Void counterparts in D1
Abbadon and Nova Mortis
D2 was without an endgame PvP mode (Trials) for how many seasons?
6 seasons
Forsaken(S4) - Worthy(S10)
The original plan for the first Destiny raid would've featured both of these bosses in the same raid
Crota and Oryx
Cayde-6's predecessor
Andal Brask
For better or worse, the de facto historian of the Destiny community
evanf1997
The only reliable way of generating ammo in D1 without using synths
Ruin Wings
The first map from D1 to return to D2
Burning Shrine/Burnout (Season 2)
In the original story/plan for D1, this species would've most likely appeared in the Comet expansion
The Veil
The three non-frame D1 NPC's that have not made an appearance in D2
Shiro-4, Efrideet, and Master Ives
The name of Datto and Danielle's goodest boy
Brim
The most recent non-raid D1 exotic to return to D2
Trespasser
This was the original name of the 3v3 gamemode in Destiny 1
Skirmish
This was the ship from Vault of Glass in D1
Glass Minuet
This is the name of Caiatl's former mentor who brought about the Hive invasion of Torobatl
Umun'arath
This was the original color of a downed Guardian's Ghost in the 2013 E3 gameplay trailer
Yellow/Gold
The first Crucible map to be featured in a PvE setting, and the quest it was featured in.
Bannerfall, Iron Gjallarhorn
It took Datto and Math class this many days after Wrath of the Machine launched to acquire the world's first Outbreak Prime
7 days
The alias Shin Malphur took up to hunt rogue Guardians
Dredgen Vale
A song from this classic rock band was featured in the second live-action trailer for D1
Immigrant Song - Led Zepplin