What's really weird and odd about this marketing for this MASSIVE hit is that they're giving us EVERYTHING in trailers and teasers. They haven't held back on giving us the villains. Sure, they haven't featured TM and AG, but it's a given and there's no reason to deny it. So, with it being as monstrous as it will be, what tricks do they still have up their sleeves? It all seems kind of, well, repetitive.
As I said, they are holding SOMETHING back that will make people's jaws drop. Whether it is during the movie or in credits, something will make people's jaws drop.
So little was revealed in the Endgame marketing that the movie HAD to be seen quickly so people could avoid spoilers too much. I'd say the same is true about this one. We think we've seen so much but there is likely MUCH more that hasn't been revealed.