This is basically what Star Wars: Empire at War did and they handled it by having incoming ships take a ton of bonus damage and have their shields dropped before they enter real-time.
I think this would be an excellent anti-frustration addition that doesn't affect multiplayer in the slightest.
My first reaction is also to ask what exactly this is supposed to do. Not sure what the purpose of it is besides heavily nerfing carrier fleets. I don't exactly run a lot of carrier fleets, but still.
Can someone explain why this change was included and if there's a chance it'll be reiterated on in the future? Thank you.
Maybe we just accept that prow weapons on non-Eldar factions aren't a main damage source for those ships? I know the Chaos players are just freaking out right now but c'mon people. Grab a beer and chill out for a sec. Prow weapons are mostly accessories that are ok to hunt down escorts with when they're too fast to broadside. They're not game-changing weapons. I consider the buff on them to be mostly a "neat" addition.
The game is clearly going in a positive direction and we already know the roadmap. I'm not pretending that everything is roses, but even I'm pretty tired of the "I hate [some specific change listed here] I QUIT" threats. Balance is just going to take time, like every other game.