if the game is bad and the development of it also (still "beta" for "decades") - people will stop playing it because of that. (see reduced player base by every year)
So as a manager you should know that if you improve the basics/game itself, then the forum activities etc will come all by itself with time.
But vice versa "great" forum activities/experiences/gadgets with unsatisfied players wont have any impact for the future.
there are many many many great ideas for years which has never been implemented or discussed (at least in public with the community).
i guess if you dont hear ur community you will end up like blizzard with its "great" diablo development.