I certainly hope that the ops, under this proposal, will have the option of looking at the cause of the complaint in question and going "...uh, yeah, that's not worth getting worked up over" and tell the person complaining to just chill for a bit, rather then being forced to layeth the smacketh down upon a conversation just because one person finds it distasteful.
Also, I personally find the assumption that everyone would use the annon complaint option if it were available a bit dissapointing. As Jim keeps stressing, *we are a group of freinds*, now with bold and italics for emphasis, and I'd think most of us are willing to go "yo, dude, tone it down will ya?" either in PM or frankly open chat(my own prefered option when irritated~) if we're feeling like something needs to be said. But there are some times when Mod Sign: Anonymous Complaint is the superior option, due either to the complainer being too shy to say anything negative directly, or the complainee having a history of ignoring anything they don't want to hear.
To sum it all up, I think that if someone goes to a mod with an anon complaint, they are doing just that. Letting the mod know they have a complaint, nothing more. It will then be up to the mod's discretion how, or indeed even IF, they should act on that.
Hope that made sense, I'm in that stage where I really need to be sleeping right now but am still awake because it's not sleeptime and such. >_>