I support the idea as well, and I would like to propose some other solutions as well. Yes, you can make some new badges for these people so it's easy for the campaign managers. One campaign manager already wrote in his campaign that he does not accept applications from users who have red dots and regret badges in their profiles. So, you may add similar to this one.
My suggestion is to restrict newbies a little more. You should not allow more than ten daily posts to newbies, Jr., and Member rank users. I don't think a senior member or a hero and above will spam like this. Even if members of higher ranks write 50 posts daily, they will maintain the quality. So, just like we have reporting limits, you can set limits for newbies so they cannot rush and do not generate spam.