As others have said, when talking about 'newbie' posts we're often talking about posts that were only of sufficient quality to pass through the filters. That is to say, many of the posts in question here are generally not the type of quality that want on the site. This is easy to notice, many questions that go without answers are also typically voted down.
One of the biggest reasons that Stack Overflow is so successful is because of the quality of information that we deliver. If that quality sinks or stinks, so does the site. I'd really hate to see that happen and low quality questions are an immediate concern.
We do have the reversal badge which would apply here, as well as badges for editing. I'm all for someone being able to figure out what a new user actually wanted to ask, editing the question and providing a great answer. However, I don't want to encourage people not to flag something or vote to close. Sometimes 'tough love' is the best thing you can give. I'm not saying that's always the case, but it does apply quite frequently.
The new flagging and review system has been working well when it comes to bringing extremely problematic posts (and by extension their authors) to our attention. I'm rather concerned that a badge such as this might short circuit that system, at least to a small degree.
I'm not saying it's a bad idea, I'm just worried that:
- People will get burned out while trying to earn the badge
- Posts that should be flagged or closed might not make it to the moderator queue
- New and (sometimes) lazy users get the impression that someone else will just fix things for them, which seriously cuts down on the motivation to improve
I would like to see something given to people that go above and beyond to salvage new users that can be salvaged, but I'm not sure this is the solution.