Alright, I'm afraid I need to give up on the Astral. Here's the reason:
...
I'm surprised you didn't consider - or at least mention considering - S-Modding either ITU or Hardened Shields in place of SC-Omni and maybe (?) Stabilized Shields. I do wonder if having 360 shields is actually so crucial that it warrants effectively giving up half the OP needed to get Hardened Subsystems. In fact, the increased shield arc matters less when SC-Omni has the hidden downside of halving the shield raise rate (I guess omni-shields having half the raise rate of front-shields is more of an intrinsic property than a mere hull-mod penalty, but that really should be mentioned in the tooltip regardless), and, as such, this downside makes the S-Mod bonus come into play less often than it should. You might need to give up a few Mining Lasers, a Tac Laser, and maybe a few capacitors if only replacing S-Modded SC-Omni with S-Modded ITU or HS (either one), but given the importance of Hardened Subsystems for doing multi-fleet fights, the tradeoff could be worth it.
Also, I think you should consider getting the Field Modulation elite bonus rather than the EWM elite bonus, as not only the Astrals are already flux-neutral even without the 10% less energy flux, but, from what I've skimmed through in the new video, they spend plenty of time not firing most of their weapons but still keeping shields raised up against minor to no hard-flux damage. The small hard-flux dissipation from elite FM could make a noticeable difference in their survivability, more so than having less energy weapon flux from elite EWM.
Finally, no consideration for Mining Pods? They're effectively free with 0 OP, and they can provide a bit of both PD and distraction as the 6th wing. Granted, they're not as tanky as Warthogs, but given the presence of Flash bombers, the Mining Pods shouldn't affect the average replacement rate by a lot - in fact, it might even benefit it slightly as long as the Pods remain alive.
(Also a minor nitpick, but the small weapon mount of the leftmost Tac Laser actually has less weapon arc than the one directly below it. It'd probably be better if the left Tac Laser gets moved to that bottom-left front-side mount.)
Regardless if you move forward with these suggestions or not, it's still impressive to see a competent and effective battlecarrier Astral loadout, especially when such loadouts are usually considered as little more than a joke that gets easily surpassed by a Legion. Great work making it work as best as you can, CapnHector!