This is shaping up to be a very interesting campaign! Some very exciting new additions are noticeable, enemy trigger discipline against small targets and single fire control use in particular. And missiles with active sensors and retargeting? Don't believe I've ever seen that in the current version!
However, the Necrons had destroyed their ordnance stockpile once they knew defeat was inevitable.
Maybe they could stop doing that, now that we're finally getting a use for it beyond scrapping it all? Leaving their entire missile stockpile for us certainly wouldn't do, since it's seemingly limitless, but with an entire planet's worth of ordnance even the Necrons could miss a few dozen missiles here and there...
Five seconds later, a further four Furies were destroyed, although they were able to return fire from 37,500 km and inflict over fifty strength-1 hits on the Khopesh, including fourteen that penetrated its armour. The third volley from the Khopesh killed four more Furies, before it was buried under an avalanche of lascannon fire, suffering forty-five internal hits. The Necron fleet chose that moment, with the fighters at point-blank range, to launch sixty-one anti-ship torpedoes.
Did the enemy ships conserve their ammunition until they realized the danger presented by a swarm of fighters at point-blank range? If so, this is seriously impressive, but I have to confess I don't really understand this part, as the fighters' weapon capabilities should've been known to the Necrons from all the point defense fire they've observed.
Also, I can't help but ask, given your efforts to ambush the Thokt and the Thanatos group in the end, does the AI still have no concept of lost contacts/object permanence, or did it deem the inner system safe because a few months passed between the two fights? Really hoping for the latter, but very excited for the new update either way!