The game calls for both players to blind bid Number of +3 areas for the Soviets to hold at game end for victory. The bid winner playing the soviets and putting his money where his mouth is :-) I love the idea of bidding for sides and VPs but our sessions tend to boil down to a dice roll for the Soviets with both bidding 3.
This idea seems to work a little better.
Bid 3.1/2/3 or 4.1 etc
The number after the decimal point is the number of extra cards the German player receives on the first turn.
Anyway, that's our local variant to add a little spice to the bidding. Enjoy