I agree. There are some legitimate design issues with some dungeons that will make people focus on more time efficient dungeons, a lot of complaints are related to the balance of the game from people that only got to level 25. My weak barb complaints pretty much disappeared once I learned more about the stat system and focused more on what I actually equipped.
For the most part I think its ready to go. There is infinitely more to do at launch than any past Diablo game had at launch, maybe even all of them put together. I’m not sure why people are being so negative, maybe they’ve never played a Diablo game.