https://www.bungie.net/en/Explore/Detail/News/47017
The first paragraph finally gives us a proper explanation as to why we didn't have our D1 gear in the intro to D2
"It was a day that was supposed to be a celebration of our past glories. The anniversary of Six Fronts — the victory that united the City and gave us the Vanguard. Guardians donned ceremonial armor to commemorate the event, and gathered for a rousing speech by the Speaker. Then everything came apart when the Red Legion struck."
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This goes very well with the parade concept art we saw early on. The problem is our Guardian is flying in from somewhere. The first mission would of been so much better if it started in Midtown and we had to fight our way up. Just saying.