If all the known content they've added since launch (new raid, new strikes, new missions, PVP maps, new gear/weapons, Trials of Osiris) qualifies as "nothing" for you, I don't think you can genuinely say there was a chance that this one mode in this one livestream had a shot at getting you to return. What were you wanting it to be?
Let's go over the new content
New raid, largely regarded as worse than VoG by a fair margin, exploited to hell, hard mode is only artificially difficult (overleveled enemies), rewards are broken (Hive Disruptor Perk)
New Strikes: only 1 on Xbox, The PS exclusive strike is universally panned, has a bullshit invisible wall preventing you from positioning in the only interesting fight, no glimmer till the boss room. Omnigul is the second worst boss fight in the game in a strike that retreads mostly old ground.
PVP Maps
Skyshock is boring because snipers are everywhere and no one pokes out to fight. It's like playing Bloc on COD4 without the nice places to sneak up on enemies.
New Missions: If it wasn't for them showing up as dailies would anyone enjoy running The Wakening or Seige of the Warmind? After three clears I just skipped them till I stopped playing. Both are slogs and the final encounter is x waves in a small arena. The Urn quest was legitimately interesting (even if the last map is a retread) and of course you can't replay that one.
New Gear/Weapons
Some good additions here but Hive Disruptor is still missing from Black Hammer, No Land Beyond and the Necrochasm are jokes at best, Dragon's Breath is a gimmick launcher with one practical application. Gjallarhorn is better in PVE and Truth is better in PVP. Post Shotgun buff 4th Horseman is good. Most of the raid weapons (besides Necro) are fine/amazing.
Trials
Haven't played it so I can't comment on it.
People that have been away from the game for a while were hoping this would be a reason to come back. Personally it's not enough for me, I'll still run through the "story" and play through PoE just to say I have, since I'm already on the hook for the DLC. I hope I'm surprised as I don't like feeling like I wasted my money. I
want to like playing Destiny. The first month was amazing, but the grind killed my motivation.
The stream isn't a make or break point. It did show the design issues I had with existing content (bullet sponge bosses, fake difficulty) haven't gone anywhere though.