Sins does not have that kind of accuracy mechanic, and all fighters have the same chance to get hit. It is very fast though yes, and the entire squadron has superior stats to the X-wing even though individual X-wings are more durable.
My thought was something along the lines of a passive Anima Tempest ability.
Anima Tempest was the Advent ability on the Halycon allowing strikecraft to dodge. If this could be made into a self-buff of some sort that was passive for Strikecraft or only targeted A wings on Rebel carriers, then it could approximate that mechanic.
Yeah, actually this can happen in the vanilla game if they happen to be fighting at an antimatter fountain or a main sequence star. They already nerfed the cool down time on it, and I don't really feel like it needs to be hurt any further just because its annoying with one minimod. If you run into this, the AI will not activate this ability if it thinks it can win, so send just enough ships that you need to kill 1 of the Akkans, then warp in the rest of your fleet once it is dead.
I actually think the AI does a pretty good job of determine when to use the ability.
The real issue I see is the AI does not synchronize other abilities well. That's not really an issue with this mod, it's a game-wide issue that's problematic in Vanilla Rebellion too.
The Executor has interesting firing arcs. It deals the most damage to 3 targets in front of it, which is why it stays facing forwards, but it can fire at up to 5 different targets on each side (plus two at the back, but it's not terrible significant). If it is totally surrounded by enemies it can fire at 15 different targets at once, so I would have it close enough to the enemy that its side banks can fire on enemy ships.
What are the Viscount and Home One firing arcs like then for the Rebel and New Republic?