Add portspoof to packages.
Could it be possible for you to add portspoof to installable packages on pfsense?
Portspoof is and active defence program designed to add fake open ports to device.
It would be nice to have as it makes malicious port scans etc much harder to do.
Edit: forgot the link.
Looks like there's no FreeBSD port, it was abandoned last year, which would make this a lot more difficult.