This would be extremely useful imo, this has been a persistent daily issue for me.
E.g. a user’s post is in review (first post approval) and they proceed to keep re-submitting the same post repeatedly without any limit.
It can get quite hard to follow when these repeat posts are weaved in with pending posts from several other users.
Like mentioned by OP, it circumvents options like max topics/posts per day and associated rate limits for new users, presumably because it doesn’t count as a post.