I've probably done more local searches than most webmasters, and Google local searches had been being gamed to death.
To pick a specific example: search for, say, businesses in a particular large-rural-village/small-farm-town in the Lutheran belt--distinguished only by a tiny Lutheran seminary--and get thousands of hits for "free-for-all" (i.e. visitor-built") "directories." Looking for gay pet manicurists in Malechthonburg? No problem, there's a page where YOU can insert YOUR very own pet-pedicure businesses for people who care what their pedicurists do off-shift. And literally thousands of equally-relevant directories with equally-empty pages (while, so far as I can tell, the number of actual businesses with websites in that town can be counted on the fingers of one hand. ONE. MAYBE, two. Certainly not three, absent a MAJOR chainsaw accident.)
A change like this would have made a world of difference for real users, like me, in real searches, like that.
Death to click arbitragers? Yes, perhaps. In that case, it's no longer a win/win scenario. It's a win BIG/win BIGGER scenario.
Sadly, if that's implemented, the spammers will probably find a way around it fairly soon. And the real businesses will once again be needles in the online haystack.