Well Strix has assumed a leadership position and you could give orders to some of the NPCs to coordinate with the PCs. Here's a list of some of the notable NPCs I envisioned for this simulation on the training side.More details on these guys later but the very rough basics are this, 

Apogee: Zenith's cousin with the same powerset and unlimited enthusiasm. Basically our Supergirl

Redeye: Female version of Cyclops

Magnetar: Good-guy Magneto

Morph: Slime-based amorphous blob hero

Plasmus: Plasma-slinging energy blaster. 

Bullseye: Female Green Arrow

Commanding these guys along with coordinating with the other PCs should give you somewhere to start since you know the basic capabilities of the opposition.