Seriously, it's as simple as putting comments that say "not considered", "Considered and in the next patch" or "Work in progress" (or something along those lines).
Some games have dev's who really listen to their players (like Guild wars 2) and always like feedback and suggestions.
My friend (who's more of a gamer than I am) also told me about this other game that had a system for labeling suggestions as "not considered", "Considered and in the next patch" or "Work in progress" in the forums. It's so simple!
But seriously, being worried about crown sinks, losing money for OOO and things not being balanced should be left up to the devs. However, we have veteran players answering to the bad/repeated suggestions while OOO sit back, stay silent and make it seem like the content in the next patch is a mystery.
I don't mean to be mean it's just, be a little more active please? Instead of just posting in things that ARE in the works or you just take a fancy to.
If you want to build a bigger, better and (maybe) more loyal community (who is nice to everyone), then maybe take heed to our suggestions.
EDIT: 14.5.12
I know the spiral knights is still young but, I don't think that should be an excuse. It doesn't mean that they can mirror the great successes of other games such as Guild wars 2 who's devs listen to the players suggestions.
I really am just asking for someone to say "oh yeh, i like this idea" or "oh no, we are never gonna have this in the game so don't suggest it again". That's it. I'm quite passionate about my own suggestion thread and even if other players agree with me, I still wonder if my words have really fallen on deaf ears. All they have to do is read through the OP and decide yes, no or maybe and tell us. Simple. Atleast we have some idea whether or not our suggestions are worth arguing.
I'd like to see more "What's in Development-(Insert Month)"