kern.randompid: jot generation senseful?

[No at SPAM at mgEDV.net]

hi,

is a random pid generation really a security enhancement?

if yes, would it make sense to setup something like:
--> sysctl kern.randompid=`jot -r 1 500 2000`
in cron to be executed every X mins/hrs?

and finally, what are the recommended minimum (security)
and maximum (performance) values for kern.randompid?