Narflung:
I’ve always seen the slaves as too individually weak to cause harm and therefore should be treated like a swarm base eg snotlings etc.
I’m working on a way to add them as an upgrade for a unit, eg, a unit of warriors with a slaver can have a unit of slaves attached - to stand in front and take any charges etc, leaving the warriors free to counter charge.
But I’m away for work for the next few months so I’m away from my rulebooks