I've come across a few games today with this (including bots!) and seriously, it's and instant loss. I don't know how this hasnt been fixed yet but it's ridiculous. And you're probably thinking "well nuke them" when a ship with anti-nuke lasers keeps intercepting and their cooldown is less than the nuke cooldown it doesn't work.
Simple solution: if a healer is healing, it can't be healed. This way squads can't just park next to a command ship, heal all day with an impenetrable defense and don't get an easy win.
Also, get rid of healing s command ship which allows a single healer to park next to it and not let it be killed.