Yes, this will keep the parties safer. If some police departments in the U.S. are starting to create Internet Purchase Exchange Locations so that Craigslist or similar transactions can be conducted in an area with video surveillance and a police presence, then this will definitely be safer. There are some sketchy people on craigslist and other sites like it.
I believe that providing safe locations with video surveillance and a police presence is an excellent step in promoting safe commerce face to face, even if initiated remotely over the internet. There are few downsides to such a system apart from the initial startup costs and the time burden on the police.
The added safety features of video surveillance and a police presence decrease the vunerability of the buyers and sellers of internet exchange goods. Even in rural or maybe more especially so the exchanges are taking place in police department parking lots under security cameras being monitored. This presents a free feature for all parties involved in the transaction.
Meeting strangers to exchange goods for money is always a risky endeavor based on trust and the higher the value of the item the greater the risk. People will feel far safer if they have the reassurance that both parties are being filmed and that police are close by in the event of anything going wrong.