With wave 10 we can get up to a nine dice attack!
The List:
Norra Wexley + Swarm Leader + Finn + Alliance Overhaul
Shara Bey + Adaptability (up) + R3 Astromech + Operations Specialist + Alliance Overhaul
Jan Ors + Lando Calrissian
Fly Norra with her buddies close to her into range 1 of the defender. Norra and Shara both take target locks onto the Defender. Jan Ors uses Lando to get an evade token.
During the attack phase Jan Ors will miss her attack to trigger Operations Specialist to assign Norra a focus token. Then Shara will cancel one of her eye results to get an evade token from R3 Astromech.
Then Norra will attack: 2 dice primary weapon, +1 from range 1, +1 from Alliance Overhaul, +1 from Jan Ors, +2 from Swarm Leader, +1 blank result from Finn, +1 eye result from Norra’s ability using her target lock. Norra still has a focus token and Shara's target lock to fully modify this nine dice attack.
You can get around the Operations Specialist if Norra already had a target lock on the defender from a previous turn and she takes a focus action.
Off course there are a several conditions needed to trigger this nine dice attack, like Lando rolling an evade, Shara rolling an eye for the R3 Astromech, and all having the defender inside their firing arcs. But with wave 10 we might see this nine dice attack happening!