From: LI, NY
Don't know if I'm a good player, but I am one who totally disagrees with most of what is said above. As far as manpower repair, I do agree, none. Japan has enough manpower points unless something incredible happens. I have all replacements on and by the end of '42 I have over 1.2M in the manpower pool.
As for resource sites, I say it depends. Pretty sure Japan starts the campaign with a small resource deficit. She can easily make this up with captured sites. Unless... In my current game I've had a large number of captured sites heavily damaged or totally destroyed. Had a resource deficit until about Nov '42. Now that said I did my usual industry expansion, which exacerbates the problem some. Since my goal as Japan is to have >30k supply/day (playing stock) there's no other way.
So here's where I believe you may expand and I'll give reasons why. Manchukuo (a bit), Korea (a bit), eastern China (a bit), Shakalin (a bit more), Hokkaido (good amount), nothern Honshu, Taiwan. I've checked the resource numbers and production in these areas and decided that a certain amount of building could be done. There are a couple of others, but they're a bit more risky.
So to me its cheaper as Japan to ship supply than resources, supply simply takes 'less', 15:1 ya know (in LI anyway). So with the extra production in certain areas they become more 'supply independent' and I have to ship less resources out and supply in as the case may be. This gives the added benefit of less fuel usage. Now it also means that I'll need more resources in the HI as these areas will be supplying less, but for me I try to ship it all anyway. Don't get me wrong, I fully understand the 'laws of diminishing returns' and realize that at some point my opponent will cut my lines of communications. This will make getting everything home impossible, but that is for my opponent to do.
The economics of all this can be a bit tricky, sort of like balancing an elephant on the head of a pin. Consider what you have to do as Japan at the start of the game. Expand the Empire, R&D aircraft, build up engine factories and plane production, produce warships and merchies, to name some of it. Much of this takes supply to accomplish. Add to that industry expansion and you could have one nice big 'economic crash'. So take it slow, plan carefully, and take the Empire to victory.
Or not. Still don't believe Japan can win anyway, but its still fun to play around with the possibilities.
Of course that's as long as the Allies don't do anything foolish.
It is seldom that liberty of any kind is lost all at once. Hume
In every party there is one member who by his all-too-devout pronouncement of the party principles provokes the others to apostasy. Nietzsche
Cave ab homine unius libri. Ltn Prvb