I've been wondering about the AVA 4. I think there could be a fun list like this out there for a killy mission: Basically just hope to go first and pump coordinated orders into the Xeo squad. If you find a good spot, drop into Sup. Fire. using the Tac Aware order. Alternatively there's room for a Noctifer ML for those brave / foolhardy enough to proceed without Dr. Worm.