The game is certainly NOT unplayable. The beginning setup is VERY tight and can be difficult especially on the smaller map (which is the one I have), which is why I use the marshaling cards. There are a couple things to keep in mind however.
1. After the first turn, a lot of this is thinned out.
2. There are MANY MORE TYPES of units in GW39 than in AA42 or even G40, lending itself to needing much more space.
3. If the map were changed to make Germany and Russia the same size, you would not recognize it as our world.
To maintain enough realism in the game and keep our cool little plastic figures instead of cardboard chits, we must keep the World LOOKING like the World. Otherwise, we may as well play the game with cardboard or have the map look like a chess board.
Rest assured, we are doing everything we can to balance these two issues. If space in Europe is a primary concern and you are not willing to use marshaling cards, I recommend waiting for the revised version and buying the big one. Just remember, it will require a 4’ wide table. Not something most have the luxury of using.