Would it be a more difficult task than they already have on their hands,i think you and I know the answer to that, it's a NO

Mods still rummage through crap sections all day,searching for low content topic and plagiarists
Even when you hit the report to moderator button,its not as if that's were the work ends, a mod still attends to the issue
Thats still down to the much work you're talking about here...

This suggestion would help quell spam posts and plagiarised content from the grassroots..
Screaming it's gonna be much work, is so wrong
Take time to think it through,all posts pass through them, it actually reduces their duty, they scrutinize the post once it's posted,so they are rest assured that anything on the forum is legit and no need rummaging all day..
And did we ever think quelling spam posts was going to be an easy,walk in the park task?
It'll definitely take some doing

Who cares about the cries that'll follow suit, we had likewise cries when we enhanced 1merit>jr member,what did it change??,nothing except a reduction in spam content