I’m not really sure if this has been covered already, but I think that you should be able to designate a spot for combat units to idle. You could use party chat to set them up at different “posts”. The only differing thing between the current guard system, would be that if they were to patrol on “posts” they could also take breaks to go take care of the essential needs like eating. It’d make taking care of security a little less tedious. Only a suggestion! I know the devs have a lot on their plate. xD
On a side note, in most of my games the combat units kind of chill out wherever I have my “gardens”. xD - Protecting that food source!