From: Denver Colorado
As to equipment in the pools: the Soviets can also see their pools (Lend-Lease and normal) grow substantially, especially later on with hundreds of AFV's being produced per week. Unless you're attacking units in forts with your Tank corps each turn, it's difficult to completely destroy a weekly output of AFV's.
For the Germans, the issue applies to only a fairly small number of units, because production rarely keeps up with losses for the common AFV's.
Did you really just equate the issue of German idle elements to Soviet surpluses?
The Soviets have elements in the pool because they make more than they need, and until they take sufficient LOSSES, the surplus accumulates. The Germans have elements in the pool because the replacement system is a sub-standard aspect of War in the East. German need goes unmet because of these arbitrary distinctions on what is what. I can show you pictures of unpainted Tiger 1s in Grossdeutschland at Kharkov and again in Tunisia... Germany got equipment into the field quickly, even to the point of logistically complicating their defense.
There's probably no down-side to Soviet surpluses, or very little considering you can make new units. For Germany, it is yet another 'little slight', that serves to drag German game-play down arbitrarily. The game consequence is, of course, that your bodies in the front aren't getting their gear so they're just dying in shallow foxholes rather than fighting in the tank that was meant for them.
Spring 2018-Playing: Demyansk Shield: Frozen Fortress; Advanced Squad Leader,
Rulebooks: ASL (always ASL), Holland'44, Demyansk Shield: Frozen Fortress