Wait til next season til they bring a fan loved character into the game so people go 'ooh look its ____ next seasons going to be great! They use hype and nostalgia and it bloody works for them. Did it with caydes death. Then brings back eris after how long. This season they brought back saint-14. Next season? Gods knows but I bet people will eat it up. I refuse to believe the hype anymore hence why I stopped playing.

How do you save him?

From what I could gather (Meme not intentional... But kinda is), he's SUPPOSED to be on the tower due to a floating Perfect Paradox in the hanger area of the Tower (I have confirmed in game, and multiple people have sent screenshots on reddit). One of three possibilities is, Yes, he's not supposed to be a vendor until later (Which, I doubt this one a lot), He's just glitched out, and he's supposed to be there, or three (The one I'm sticking to, but not confirmed), they don't want him released immediately, as to avoid spoilers for at most a day (As people would do it after work, before work, etc, etc). It could be a mixure of 2 and 3, I dunno, but those are some of the thoughts I came up with. Outside of my speculation, nothing has been said, and [b]SHOULD BE AT LEAST MADE AWARE by Bungie themselves [/b](Since I haven't seen a single response on this)

I can’t complete the quest - it disappeared right after I got the shotgun...