You know something cool they could have done with ground drones? Some group or polity that makes use of lances/levels/stars of drones and one human lead.
Some sort of equipment mounted on the lead mech/tank/BA that makes squadmate drones in proximity more competent and immune to things that normally disrupt drones. Maybe like "proximity drone coordinator" and "remote drone shield" or something.
It would narratively make sense for a faction that has little manpower but a lot of advanced industry, like the society or WoB.