From: Iowan in MD/DC
It is not only 1000 supply points, but it is local supply points...which means if you expand production in say Java...you most likely have to ship that 1000 points of supply in.
However, the HI that is created, is added globally to your pool with no los needed. The supply is of course generated locally...but that might offset future supply from being shipped in.
So, it gets complicated fast.
HI is almost unimportant.
Well, only in the context that players now focus more on aircraft builds than Naval or ARM which drives them into a supply deficit instead of an HI deficit.
If you chose to accelerate ALL CV's and DD's you would then need to expand NSY significantly, and would need a lot more HI as well.
You choose to increase VEH seriously (say +300), again, you can find yourself in an HI deficit.
These were more common strategies 4 - 6 years ago. Now the player focus is almost singularly fixated on aircraft. I'm not criticizing, just noting it.
I'm at work so don't have my expanded industry numbers, but I'm nearing 3M stockpiled HI in my game with Bullwinkle as we near the end of 1944. I also have more than 100K ARM stockpiled vs. projected need for every reinforcement unit and approaching that for VEH.
I accelerated every CV. I'm actually turning off NavSY now as all the subs that are even worth using are building, and every DD is accelerated until it's in normal build mode (and the better ones, like Shimakazes or Yugumos or Akitsukis, are accelerated until finished). I built Yamato/Musashi.
Basically, I didn't skimp. Without being able to check for sure, off the top of my head/IIRC, my NavSY was 1640 and my MerSY was about 800. My ARM was ~300 (with ~300 turned off) for a long time, which I think is still the case. My VEH was >300 and maybe even higher (but not much higher, up to 350 maybe). These are values I expanded to by late 42 at latest and left running. I did math and check up on them every month or so. Or longer.
Yes, I expanded HI in Java by a bit to make it closer to "Oil neutral." I don't think I'd do so again - HI simply makes supplies from a finite number of Oil->Fuel, so expanding HI is just burning through your tank of gas faster. In global terms. LI, on the other hand, is more interesting...
For those Japanese players involved in a scenario 2 game, the monthly pilot training is a massive HI drain. When combined with accelerated DDs, CVs and a modest increase in the air commitment, it's not at all difficult to imagine a serious HI drain. Unimportant? Not hardly.
This has not been my experience and I haven't even emptied my pilot schools. It's costing me ~27K per month, or less than 1/3 of my surplus production.
This is Scen 2.