a regular update (well as regular as is feasible) of any suggestions that players have posted which have been presented as possible inclusions in the game.
That way if someone has suggested something which is or isn't usable at least both the person who originally suggested it and other players later having the same idea won't need to restart topics which have long since been covered.
It will also give a better feel to the value given to the customers of NC. If suggestions players come up with are at various points implemented, to me it shows that we are all trying to keep this game alive and suited to NA not just NK.