I know over on DCUO the devs, for at least the first two weeks are very interactive with PTS feedback, but then they will just abruptly stop responding altogether and several times make major changes at the last minute and never bother to explain their rational why. It was frustrating for many players because they devoted so much time to testing, only to either have their suggestions ignored or have them heeded, only to have them abruptly change it back just before going Live.
I think the problem with a lot of the feedback they see are strictly from players who do PvP and/or vMA... but that is not the focus of this game... and the devs have to take how changes in those environments may negatively impact the majority of players who do not participate in that content. In other words, if they buffed something specifically because of concerns about vMA, would those buffs make players doing regular questing too OP?
I can only imagine the difficulty that the devs face with trying to balance game abilities for a wide variety of content and player abilities. As the saying goes, "You can't please all of the people all of the time" but so far I've been happy with the changes that are coming with DB game update.