Fenchurch and Marcus Ren are two characters I would love to meet in game. Moreso Marcus, I think, was a long-time friend of Cayde and us one of the people he believed would kill him. Not to beat a dead horse but I would also love to see Sparrow Racing and Shiro-4 return, too. I want more lore on the frames in general, the sweeper frame got a neat little mini comic in the first edition Destiny Comic collection. But I do want to see Frames in general becone more flushed out. Lysander and the Concordant are at the top of my list for things I want to see go somewhere. If there was any potential villian and enemy faction that could emerge from left field without warning following the Final Shape its Lysander and the Concordant. I have always believed Destiny needs a little more conflict within Humanity itself, Season of the Splicer gave us an excellent example of that. As we know not everyone in the City agrees with the Vanguard's alliances with the Imperial Cabal and the Elliksni of House Light. Surely the departure of the Consenus factions, Dead Orbit, F.W.C., and New Monarchy must have left some societal mark, even if we haven't seen it. I could totally see a DLC where the Concordant steps out of the shadows and threatens the peace we've worked so hard for. Maybe with stolen repurposed frames and tech from the abandoned and unguarded Black Armory, Ishtar Academy, BrayTech/Warmind bunkers (heck throw some SIVA on top and they'd be the whole package). We could even work with the old Concensus factions to thwart the Concordant, as they did before after Twilight Gap.