Lanefan
Victoria Rules
The one out of all those that I'm pretty sure would have been a fairly big success if released in a different era than it was is Nentir Vale and the associated principle of a "points of light" setting. I think that would have gone over wonderfully* if released by TSR in, say, 1982 as a setting for Basic/1e; if only based on the mileage that Judges Guild (a not-well-distributed 3pp) got out of their Citys State of the Invincible Overlord/World Emperor.You know, I often find myself wondering "if this classic TSR product were released today instead of 30-40 years ago, would it be as popular now as it was back then?"
I also wonder the inverse "if this modern D&D product was released 30-40 years ago instead of today, would it be as popular and classic as many of the older TSR products?"
Like . . . if Eberron was released in TSR-era D&D, would it have been popular? Or Nentir Vale/Exandria? Or Descent into Avernus, Rime of the Frostmaiden, the adventures from Candlekeep Mysteries, or Storm King's Thunder?
Or, if White Plume Mountain, Against the Cult of the Reptile God, Expedition to the Barrier Peaks, Spelljammer, Planescape, Greyhawk, Ravenloft, or Dragonlance were released for the first time ever today, would the same people that cherish these classic adventures and settings actually hate them?
* - and by that I mean significantly better than it did at its actual release.