Like the general idea, however is this a problem above. To my mind, you need a strategic incentive for the Luftwaffe to try to come up for the bombers. I don't think just saying in the rules, x number of fighters must try to engage x number of bombers. I'm thinking to make the situation urgent to the Luftwaffe, you might have to award very significant points for any objects destroyed and/or the same for buffs who RTB and land safely. This would have to be game changer level of points to create the ferocity of intent needed on both sides.
Still it's a good idea for terrific fights.
And one more point though. What's the minimum number of players needed to make this work and representation? We certainly don't have 4 wings of spits plus buffs available to us.
To be honest the way I read it making the bombers worth anything and making anything they hit would detract from the event IMO. As said in previous posts they were bait, nothing more. If this event were to happen I would volunteer to fly bombers just for the atmosphere of the event, to say "Hey there's our bait". IMO nothing I do would be counted but it would be awesome to sit there and be "technically" escorted but dozens of Allied fighters.
I stopped caring about points and who wins long ago, I fly these events for fun and comradery with other players, and when I read this setup I envision myself sitting there in some Mitchell I's looking up and seeing a massive wing of Spits going "Wow that is awesome".
Granted I'm not trying to inject my own vision into this, it's just I don't like flying fighters and I want to find someway I could participate even if it's just some abstract thing to give flavor to the event.