Obviously, anything that was intentionally included that is broken should be fixed. Just as obviously, resources should be spent on adding content to complete your vision of the game.
However, before making any design changes based on forum feedback, PLEASE PLEASE PLEASE get a larger sample size. Just because someone submits a complaint and people dogpile it here in the forums so it seems popular, does not necessarily mean the majority of the players agree. The number of registered users of these forums is likely a fraction of your actuall customer base. The number of active useres on these forums is an even smaller number.
I see many popular changes in these forums that I don't agree with. And I *THINK* there would be more oposition to these changes outside of this small sample size. It would be nice to KNOW.
So using resources to make major changes (party size, etc.) should be based on more than the vocal minority here in the forums. Please implement a survey via email or in-game or something to get a larger sample size.
Thanks!