Marvel's Avengers was first shown off at E3 this year and was met with middling thoughts. Crystal Dynamics made it very clear this was their version of The Avengers and not a game connected to the MCU. I believe it threw some people off and they have not been giving the game a fair deal. More and more has been shown of the game since E3 and it has looked better everytime.
The new trailer shows us more of Kamala Khan, otherwise known as Ms. Marvel and reveals more of the plot that shows how she will try to reaasemble The Avengers after a tragedy made them disband.
Crystal Dynamics has said that each hero will be upgradable with different armor and costumes and they show off that here with the character upgrade system which looks like a bit of Destiny and Injustice 2. Your hero can be customized with different armors that affect abilities while also having some cosmetic effect like in Spider-Man on PS4.
As Avengers gets closer to release it has the looks of what fans have wanted out of a Marvel game. Maybe it can get fans optimistic for Marvel's video game future which has been lacking (besides Spider-Man, obviously).
Marvel Avengers releases May 15, 2020.