I have read your points and if I agree with them or not doesn't change the fact that this is a different way of accomplishing the same death.
The speeds of the flac guns, rate of speed for the mines and the other yes I know as I have stated was loose math. Feel free to apply more realistic speeds.
AS FOR Bombers 99% sure of CAP death already? Tough-ing up Caps. ;D OH that'd suck wouldn't it? See when the changes to the Cap's gun layouts happen I wonder if it will increase the survivability of Caps against bombers. But again 99% of fighter wings fail to fend of bombers.
Tools of your devices.
If you're worried bomber will have too much effect on caps -already- then don't fly caps. Being the biggest target in the battlefield is probably one of the most compromising positions.