I, too, am interested in finding out what Larian's dev's think. I can't imagine looking at forum feedback feels good though - some people can be very harsh critics and I'm sure they worked real hard to make it all work.
That's always the case in any major title. There's no such thing as a perfect game. There will always be people who are unhappy/ungrateful with the job done.
I would judge the game's success based on Steam reviews which are going steadily to "Overwhelmingly positive".