The changes I made is to add a bit more air-support for the US because 1 or 2 planes in the WW2 settings (unlike the modern ones) arent really game changing, I have added more panthers to the axis and changing the experience of the tank destroyers in the US to: green-->regular, regular--->veteran to have more "tank warfare".
In my opinion the scenario is great as it is, but i changed it to be like me and my opponent be more "intense" battlefiled .