This National Objectives issue is all insane, in case you ask me, and was something the designers come up with to spice the 50 Anniversary ed, because they wanted to script the game into the historical correct pattern. If Germany attack Leningrad, they get awarded because that is what they did in the real war. If USA attack Spain, they get punished because that did not happen in the real war. Get it ?
Think about it, how rational is it that the original owner of Leningrad only get 2 IPC income, but an alien attacker that bomb the city, kill the population and burn the land, he will get not only the inherent 2 IPC, but also an additional 5 extra bonus, to a total of 7 IPC from a scorched and now ruined territory ?? How derogatory is not that ? I could maybe agree if it was a one time plunder bonus, like when you plunder a capital, but this NO pays out every turn, like it was some magic chest that filled up every night, so you can come and plunder it again next morning, for infinity.
Lets look at the numbers in the book The Economics of WWII, bu Mark Harrison. France had a Gross domestic production of 199 billion dollars in 1939. In 1940 the French GDP had sunk to 82 billion dollars. Yes, that happens when you ruin a country. But the lost French GDP did not add to Germanys GDP, because Germany only went from 384 to 387 in the same time, so to conquer France was not the same as winning in the Lottery. Germany experienced the same problems after capturing Polands GDP of 76 billion dollars, Baltic States 12, occupied USSR territories worth 134 billion dollars, ahh the table on page 8 list like 15 countries Germany plundered, for a total of more than 300 billion dollars, but Germany only increased its GDP from 384 before the war to a max of 412 in 1942, when Germany was at its peak of power. So obviously its a lot of money that just vanish into the void when you conquer another country, bomb the factories, kill the population and burn the land.
But in our A&A game, its kind of opposite, you get rewarded by a NO income that is totally out of any balance no matter what you compare it with. So, to make it short, just ditch the possibility to get extra income from a captured territory. IMHO the NO should represent income from international trade, agreements, shipping and stuff that dont have a printed IPC income on the map. Lets keep the Iron ore trade with Sweden and the Trade agreement with Russia, that is exactly whtat NO should be about.
I think the NO list should be like this.
Germany
5 IPC from Sweden, Iron ore trade
5 IPC from Russia when not at war with each other, trade agreement and alliance
5 IPC for Middle East and Caucasus oil, if Germany capture this territories
USSR if attacked by Germany
5 IPC Lend Lease if sz 124 and Archangelsk is controlled by allies
5 IPC Lend Lease if Persia and Caucasus is controlled by allies
5 IPC Lend Lease if Far East and that seazone north of Japan, dont have the map in front of me, is controlled by allies
UK
5 IPC for shipping benefints and international trade if all Atlantic Ocean seazones are free from Axis subs and warships.
5 IPC for shipping lanes if all Mediterranean seazones are free from Axis subs and warships
Same with the others, this is how NOs should work, you get the picture
Now, USA is different, it was the only country that got mass production. The GDP of USA went from 800 billion dollars in 1938 to 1500 billions in 1945, and no other country experienced anything like that, the other Great Powers either stayed at the same point, or went down, only USA gained in GDP, and that was because of mass production. Also, USA raised its military outlays from 1 per cent of national income in 1939, to 42 per cent in 1945, and US Industry was just starting to get fueled when the war end.
To model the US mass production in this game, I suggest USA get 5 IPC extra income for each Turn, even if not at war. This NO should be in addition to the OOB NO that is triggered when in war.
To sum it up
USA
Turn 1 income + 5 IPC
Turn 2, income + 10 IPC
Turn 3, income + 15 IPC
etc etc
when at war, income + mass production NO + the OOB NO + income from captured territories
of course it need some playtesting to get balanced, but IMHO this is how the NO should work,