Please take the time to go through posts with the tag that's about to be fixed. These posts tend to suffer from what I call Bad Tagger Syndrome, which means they probably have other unnecessary or incorrect tags as well.
If you can't go through posts at any given time, yet would still like someone to look at them before suggesting an action, write your idea down somewhere. At the moment, the best thing to do would be to leave a post on the tagging project thread, then leave a blip linking to your post. Someone's bound to notice it.
Other ideas:
If we could make a new tagging project thread, one where the original post is regularly updated and organized, that would be awesome.
I don't know where else we can have discussions about tagging problems without cluttering the current project thread. I'm starting to think there should be individual threads for every discussion and cleanup. But that's just me.
Updated by NotMeNotYou