I've run a standard Dashing Miranda build....

Dash Rendar (36)
Lone Wolf (2)
Heavy Laser Cannon (7)
Rey (2)
Burnout SLAM (1)
Smuggling Compartment (0)
Outrider (5)

Miranda Doni (29)
Twin Laser Turret (6)
Extra Munitions (2)
Sabine Wren (2)
Ion Bombs (2)
Cluster Mines (4)
Advanced SLAM (2)

Total: 100

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...but I started wondering if Norra might somehow be an improvement?

Miranda Doni (29)
Twin Laser Turret (6)
Extra Munitions (2)
Sabine Wren (2)
Ion Bombs (2)
Cluster Mines (4)
Advanced SLAM (2)

Norra Wexley (29)
Push the Limit (3)
C-3PO (3)
R2-D2 (4)
Vectored Thrusters (2)
Alliance Overhaul (0)

Bandit Squadron Pilot (12)

Total: 100

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Dash & Norra works because Dash can throw a lot of heat at enemies targeting Norra.

In a Miranda & Norra list, Norra is still the obvious target, but Miranda can't throw the same type of heat Dash can -- TLTs are consistent, but you need explosive. ... Which you have in the form of your bombs, but they're still not doing enough damage like Dash could.

That being said, if you're able to burst damage with Norra and whittle down enough ships that Miranda can win out on points, you're in a better place. But Arcs don't generally last under concentrated fire, and Miranda can't take ships off the board as fast as Dash could, meaning Norra is likely taking more shots.

If you want Norra to replace Dash, I think you would need to go with Expertise Norra to get the most out of her offensively. Sub out PtL & C-3PO for Expertise and Tail Gunner.

I haven't any knowledge to assist, I just want to congratulate ideas sans Biggs.