The people who designed this game did a ton of research and are avid Diablo/Destiny/Division players
Then how exactly did you make the same mistakes as those games when they launched?
I wont lie, i have a feeling EA is going to bring the hammer down on you guys. This game's launch is not going well and enough people are sick of the "just wait itll get better" approach to games as a service.
I can't speak to that - I'm only responsible for the audio experience (which has it's own issues we are trying to solve). The only thing I can say is that sometimes things seem very clear once players really start playing...serious end game, serious amounts of hours being put in - it's not always 'easy' to replicate that internally, especially at scale.
We are committed to responding to the community and EA is too. They have invested a LOT of time and money into this project and want it to grow and be successful over time just like the dev team.