FYI Adobe Lightroom will compress the pics but still keep best possible resolution. There are other tools but this one is straightforward to use and the full version is free for 30 days. I’m a creative photographer and use it all the time.
To change picture size - import pics first. Then select pics to change, click Export (bottom left corner) and under File Settings / Limit File Size To, put in the size you want. You can also clean up the white balance and tone to take out that yellow tint.
The allies can (and usually will) still win the game if being 30-40 IPCs behind, IF they can correct this pretty soon. Let’s say in ~5 turns max., they must at least get a total equalization of both economies.
Having said that, if there is no visible possibility to (at least) equalize, the allies will have lost the game even if their shortfall is only small. I have no exact figures here but I bet the allies will have lost the game even if their shortfall is 5 IPCs per turn only, if they have no possibility to repair this.
Sometimes every IPC (per turn) counts…
I think the point is to save time in global games. By far round 1 is the slowest round because you are shuffling and merging and re-stacking everything. Even though you more or less know the set up after a few games it takes time because there are units everywhere. This is very much true for Germany, Russia and japan but goes for all other nations too. For france you set up a bunch of units which are removed instantly.
After Round 1, there are units in maybe half of the initial territories and this must save a lot of time.