If people are really having a hard time understanding why people are less than hype about this trailer, and skeptical about whether Destiny 2 will end up being good, just remember that Bungie blatantly lied about the kind of game Destiny 1 would be.
https://www.youtube.com/watch?v=V9YoJjdEBv8
Yeah, that pissed me off a lot back in 2014. I was beyond disappointed. A lot of people should be.
Then I played the game expecting a Halo/CoD like campaign. I was even more disappointed with the game and its' mediocre story/characters.
But here's the thing... Then I started playing what people call the "end game". I started playing more with friends. We started playing together and venting about how much potential this game had. While we were doing this, we were getting better at PvP and discovering many new things about the game. While we were venting our frustrations, we were all obtaining that one primary or special weapon that we ended up getting attached to. Then we started doing the nightfalls, which were pretty fun and challenging... Then the raids came out... Holy. Fucking. Shit.. We met up with a group of three others (and that number kept growing)...and having to figure out these raids with those guys stands as the best memory I've had of gaming since I was 10 years old playing Mario 64 for the first time.
The game kept gradually getting better and better with each expansion. The new hub areas, better characters/story in year 2, new challenges, new PvP modes/maps, sparrow racing, prison of elders (Horde mode), and the newer raids were just awesome fun and very well done.
TL
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R: I was shitting on the game at first, then it became my game of the generation.
A lot of people just beat the weak "campaign" and never touched it again. The game does so much more than just that if people gave it a better chance after year 1. I am skeptical of Destiny 2, the main thing I'm hoping for is that the vanilla version has MUCH bigger worlds to explore and MUCH better/improved side stuff to complete while patrolling.