If Attack Wing taught me anything, it was that this same mecahnic can be used for much larger ships.
I have some ideas what that could like like for a game with Star Destroyers.
1-multiple firing arcs: I think you could go with a P/S/F/S system.
2-multiple weapon systems: Ships would be able to fire all their weapons systems in a single round.
3-Lauch Fighters Action: I Imagine the fighters would be tokens that could be put on enemy ships, indicating that they are attacking them or on your own ships, indicating that they are defending them. I imagine something like the way fighters work in AA War at Sea.
3-Armor Stat: The Agility Stat would not go away, but like in Attack Wing most Large ships haev a pretty low agility. You could compinsate by adding an armor stat. Un-like Agility a point in armor would not give you a dice, instead it would automatically cancel a single hit. Some weapon might have an armor penetration tage that mean they ignore armor (all of it)
I imagine A Star Deastroyer might look something like this
Imperial Class Star Destroyer
Weapons
Missile Array - Forward Arc - Attack Dice 2 - Armor Penetrating
Port Turbo Laser Battery - Foward and Left Arc - Attack Dice 4
Starboard Turbo Laser Battery - Foward and Right Arc - Attack Dice 4
Agility : 0
Armor: 2 (I imagine this would really high for the game, but stardestroyers are really hard to kill)
Shields: 10
Hull: 12
Actions: Target Lock, Focus (battlestations), Launch Fighters
Upgrades: Special Weapon System, Crew, Crew, Crew,
It would also have a pretty crappy dial.
By Comparison a Blokade Runner Corvette Might look more like this
Weapons
Missile Array - Foward Arc - Attack Dice 1 - Armor Penetrating
Turbo Laser Battery - All Arcs - Attack Dice 2
Agility: 2
Armor : 0
Shields : 2
Hull : 3
Actions: Focus, Evade
Upgrades: Crew
Granted I am not nearly as familure with the specs of a Corvette as I am with a Star Destroyer, I just wanted to show the comparison.