Have you had a chance to put any of it to the test?
It's intriguing, but it seems like you'd need a computer running in the background to sort through the numbers before you fire. Don't get me wrong, my intent is not to "attack" your idea at all, I just have some questions on your thought process. Nobody else is posting/asking questions, and I don't want you to think I'm ignoring you or that I'm not interested.
For starter's I'm unsure of why you'd adjust the velocity of the round based on your forward speed. If you and your target are flying the same speed (lets use 200yds and 200mph) the apparent velocity of the round is the same as if you were stationary. I think I know where you're going with it, but holy cow will that get complicated! On the 200 yard, 200 mph shot, how far does the bullet travel from the time it was fired until it impacts? More than 200 yards, because the target is moving away, even if it's apparent motion is zero from your perspective. That's a small factor, but it matters more for longer shots, and when the apparent speeds change. How far does the bullet fly on a 1000yd head on shot with both pilots doing 350mph? Or, on a 20 degree head-on deflection shot, what is the lead required if you're flying 300, and your target is doing 200, and he's 400 feet lower than you?
A course in estimating target speed may be a prerequisite.
So far, your chart appears much simpler, but I'm a little unclear how you intend it to work. If you and your target are both going 200mph with him in a bit of a bank 200yds in front of you, with you matching his bank, how does his speed factor in? His speed would be almost an apparent 0mph from your perspective.
You'd still need to lead him, of course, but how much? He'd be holding at a "consistent" point on your nose, so there's no apparent "crossing" deflection. Is the lead required based on time/distance, or G-force (you'll need to fire at greater than 1G unless you pull the stick and then unload the G's). Would the same exact shot (at the same range) but with both of you at twice the forward speed require the same lead? Or double? Or other? What about twice the speed, and twice the range, and twice the bank angle?
How does the bank angle factor in? In a near 90degree bank (lufberry shot) the upward cant of your guns is now translating to "lead", and you've lost the tilt that's supposed to be opposing gravity. Hence, your shots in a left bank will trend too far to the left, and low. With a chart only looking at speed and deflection angle, would the mathematical lead required for a 30 degree deflection shot be equal for a target regardless of bank?
So, on a given 30 degree deflection shot at "x" distance and speed, would the lead be the same if your following your target through an immelmann vs. say a flat turn? Would the lead be the same on the "upward" side of a loop vs. the "downward" side? On the downward side, the cant of your guns is actually going to accelerate the apparent effect of gravity, rather than oppose it, since the guns are now tilted "down". The bullets trajectory would reverse from your point of view. They'd appear to curve upward rather than downward (this also happens when you fire with your nose straight up).
What about firing on an opponent that's diving away? If you tilt your nose up or down, your bullets will hit high. Even on a 0 degree deflection shot, with both pilots "wings level", same speed (but accelerating) and maintaining 200yd separation, in a 45 degree dive you'd need to aim low to hit him (assuming 200yd convergence, because otherwise it'll get too complicated; for the same 200yd shot with 300yd convergence you'd want to hold right on him). Now, since he's diving and you need to hold under him, you're leading him, but the apparent deflection is zero...
