1. Japanese AAA. The Japanese AAA didn't really upgrade reasonably throughout the war. Units which had 13mm MGs as low-level AAA in 1939 ended the war with those same 13mm MGs as their low-level defence in 1945. Basically I just felt that for infantry units it was reasonable to maintain the Type 92 HMG as their low-level defence as that was a unit which adds considerably to that unit's ground combat firepower.
In non-ED infantry/mechanied units I allowed incremental upgrading to occur. So, for engineer units, Base Forces etc the 13mm MGs might be swapped out for 25mm cannon and the 25mm cannon might be replaced by Bofors. Again, it doesn't turn them into FlAK hotbeds but it does tend to just force Allied bombers a little higher as the war progresses.
2. The IJN has a great 4.7inch DP gun available from the beginning of the war BUT very few units are so equipped at the start of the war. So, what I've done is change the target TO&E for IJN base forces, engineer units and coastal defence units so that they swap out 75mm AAA units or 4.7 inch anti-shipping guns for the 4.7 inch DP gun. This keeps the anti-shipping capability of the CD units but also gives them some ability to reach up and touch the B-17s. In addition heavy AAA units now get a boost in their FlAK performance such that they can reach enemy bombers above 25,000 feet or so.
3. The IJA doesn't start the war with anything comparable to the 4.7inch DP gun BUT during the course of the war it did build a great 120mm gun. So, in response to the B-17 threat this gun comes in about mid-43 ( instead of early 44 ) and begins to replace the 75mm and 105mm guns in the IJA FlAK and base units.
4. I've standardised IJA and IJN CD and AAA units so that, except in rare circumstances with specific reasons, each of those units will use just IJA or IJN weaponry and upgrade appropriately.
5. I've one a run-through of radars and found a number of crucial IJA and IJN units missing radars. So, now, all Base Forces, Port Defence forces and Medium to Heavy AAA units have air search radars. .
6. The Ki-43 II Oscar comes in a little earlier and as the sort of plane the Japanese player is going to have to pit against B-17s it swap out its 2 MGs for a single 20mm cannon. There was actually a model which did this in real life so I've included it here. As the Ki-43 is armoured I expect it to be quite capable now of taking on B-17s without suffering excessive casualties.
7. F4F4 replacement rate increased slightly. It had been reduced and now I've pretty much split the difference.
8. Allied CAs reviewed for radar and floatplanes.
9. PPs increased slightly from 125 per day for Japan to 150 and from 250 per day for the Allies to 300. This ought to allow a Japanese player who makes an error in his weighting in the early days require more quickly ( about 20% quicker actually

So, mostly the Japanese AAA and radar build-out has been fixed and their unit TO&Es made more internally consistent. Do I expect this to benefit the Japanese? Yes. Do I think it will benefit them as much as some might think? Absolutely not... I doubt many Japanese players will have the economy to produce all of those new guns and replace the ones they currently have. Sure, they will be able to upgrade a few select units but they won't be able to upgrade everything by any means.
With that said the Allies have had some fixes too - mainly to their navy and also to increase F4F4 numbers.
So, if any players or readers of the AARs have any ideas please pipe up. For all I know 2nd ACR and Damian may have listed laundry lists of changes in their AARs which I'm not privy to.
Oh and if anyone is feeling particularly generous and is willing to host the mod then please feel free to contact me. Right now I am limited to emailing it out to people who contact me and that's obviously not ideal.