Devil, come on in. You'll get lots of fighter combat and bomber intercepts. It will be glorious fun. 
No, Brooke, it won't be. And even if I did have fun, it would be in spite of this design and not because of it. Unlike most players, I can separate how much fun I personally have from how well the event is designed. The Axis players have a very low potential for fun gameplay. I'm not sure the Allies will fare too much better in this regard, but they will at least have all the advantages of plane matchups, target selection, available bases/spawns, freedom of movement, and scoring. The Allies will dominate this event in every regard and consequently, have more fun.
I do not understand how you fail to recognize the serious faults in this design - especially since you have made many of these same mistakes before and have been told by myself and other players about these kind of problems.
Here are my main problems:
1. Everything about the targets is chosen poorly. They are too spread out and the relative distances to the airspawns and bases favors the Allies. This is especially egregious with the air spawns since you chose where they are placed. The allies have a greater freedom of movement because of the fact that one air spawn is nearly equally distant from the main Allied target cluster and the outlaying target while having the luxury of a second air spawn farther west. The Axis air spawn is 2/3 of a sector farther away from their targets then the allies are with their nearest air spawn. Not only are the Axis forced to travel longer distances, but they have fewer direct routes to target areas. Regardless of radar settings and minimum bomber altitudes, this is unbalanced.
I added some circles to your map to illustrate this point. Each ring is the same, with the radius equaling the distance from center of 9,12,9(airspawn) to A109. This is the shortest distance from an air spawn to a target.
For balance, either the 9,12,9 spawn should be moved to 9,12,3; or the Axis spawn should be moved to 10,14,5.
Furthermore, The target areas are far too large for the player numbers you will have. I does not matter if you say that the "battle area is the same as Dnieper". It did not work then and it won't work now. You don't have the numbers to make defense a viable strategy with 2 target areas per side.
2. How exactly does 6 190F-8's equal the potential damage of 7 B-26's and 6 P-40F's? You tried this obviously imbalanced strike force in "Hell Over the Hinterland" and it was a colossal failure then. I expect Anzio to be no different.
Now I understand the historical limitations you are dealing with as any Axis bomber would be purely fiction. But having over double the number of attackers available to the Allies is not the solution. You can claim(correctly) that the P-40 is a lesser fighterbomber than a 190F, but it would take a ridiculous amount of 190's to balance the B-26's. The ability to score points on the offense severely favors the Allies based on pure numbers alone.
Maybe 7 B-25C's and 6 P-40F's would be balanced? But the Allied players hold such an unreasonable stigma over the B-25C that you won't entertain the thought of including that plane even if does make more sense for balance.
Another solution would be to change the event to an Allied only attack design.
3. The B-26 itself presents a problem. I believe you underestimate how strong it is against a mid-war Luftwaffe plane set.
These are the B-26 loss rate numbers from Pantelleria.
Frame 1
63 B-26's(21 sets) 0 shot down (not intercepted at all?)
Frame 2
39 B-26's(13 sets) 17 shot down. 46% loss rate
Frame 3
45 B-26's(15 sets) 5 shot down. 11% loss rate
Frame 4
45 B-26's(15 sets) 3 Shot down. 7% loss rate.
Frame 2-4 Averages.
43 B-26's. 8.3 Shot down. 18% average loss rate.
Even if we assume as a worst case scenario that the Frame 2 numbers will be typical in this event, the scoring dictates that the Allies will turn a profit every single sortie if just four B-26 pilots drop successfully.
Let's look at another factor from Pantelleria Frame 2. Of the 13 sets taken, 6 resulted in either a totally missed drop or total destruction of the set before the target. The other 7 sets dropped successfully. They earned 17.5 bombing points over the frame using this points system while only losing 17 for planes lost. That is not even factoring in the 2 kills they also achieved. That's 19.5 total points gained for a loss of only 17 in a worst case scenario for the B-26's.
You cannot realistically expect the Axis to shoot down 50% of the B-26 every mission. That simply will not happen and that is what will be required for them to achieve a points advantage in this aspect.
Defending against the B-26's is a losing proposition as is not defending against them. The Axis cannot win under any circumstances.
If you can not or will not create a balanced event, why should I or anyone else participate in it?
