Well, so you're saying you like them just how they are now?
Thing is, you keep emphasizing that a few beam turrets on the carrier will let it fight. But it will NOT save its sorry butt. If the carrier really gets ambushed, with or without beams, it is going DOWN. There is no way a hybrid ship can stand up to heavily armored hard hitting destroyers.
However, what was the carrier doing alone? What about its escort?
Point is, carrier warps out at the slightest sign of trouble. MEANWHILE support fleet warps with carrier. Enemy will have to wait for warp drive to recharge, giving you time to recall the destroyer fleet.
And if the enemy sends ANOTHER fleet to wipe out carrier, the carrier's support will be able to defend until the destroyer group can arrive. And it can scramble fighters. Never underestimate a couple wings of bombers going for your anti capital beams.
Point is, we need some specialized destroyers. Imagine having a destroyer with 2x pwnage power.
Yes, having anti cap weapons on carriers is nice. However, you can't have everything. So which would you prefer. 2 beam cannons or a dozen extra wings.
Thing is, you will likely not have a chance to fire the anti cap weapons. You should be running. Because thing is, a carrier will still not survive.
And the carrier isn't the main point actually. Its the destroyers. We want the destroyers to hit hard, and there is no reason why the fighters can't be based elsewhere. Move the 2 beams from carrier to destroyer, move the hangars from destroyer to carrier. There is a reason why modern aircraft carriers are defended only by a few flaks and we use another ship for heavy artillery.
I mean, you gotta admit there is SOME merit in this plan...