The general problem, as I see it, is that there is no notion of historic ratios between different tanks.
Prestige is a too-simple tool to encompass all of this.
As I see it; prestige is an "after the fact" "objective" analysis of each unit's worth; and as such, it's fine.
But the WW powers did not have this information available!
Why would you as the Americans build lots of Shermans in PC (and PG games) when you have better tanks available?
Why wouldn't you as the Soviets build lots of KVs instead of all that other junk; or too much infantry instead of units more suited to Blitzkrieg?
Why wasn't all German end-war tanks Tiger IIs?
To truly solve this; you would need ratios such as "for every KV tank you build, you need nine T-34s".
Or at least, for the prestige costs to take into account survivability to a greater degree.
If you could accomplish as much with a twice as large obsolete Panzer IV army as you can with a King Tiger army (assuming you get two PzIV's for the price of one Tiger II) then the costs would be fine, and the only problem would be "learn to play".
Problem is that with skillful play, you won't allow your precious Tigers to be surrounded and run out of fuel (the rest of your army carries your back) and you can simply accomplish more when your attacks carry real oomph.
Perhaps if the maps were unbounded/limitless, then you would see the value of having a twice as large army; and then the prestige costs would be fine. But in PC you only need a strike force of the critical size; then it's better to go for quality than quantity.
TL;DR:
The opposite of Stalin's saying "Quantity is a quality of its own" is true in this game, but is it adequately mirrored in the prestige costs? In short, if strength 10 (say the Heavy Attack value) costs 100 prestige; then strength 20 shouldn't merely cost 200 prestige, it should probably cost more since you effectively store twice the attack power in the same hex.
Of course, all of this reasoning might be completely ignoring the appeal of Panzer General/Corps games; namely to build up an invincible force of super-elite units...
