Interesting historical setting..and good mapping.
However;
improve the graphics a bit:
1) The Norwegian and swedish flags are so "hard" in your eyes:
Less colour and perhaps also smaller size flag crosses.
2) The Finnish emblem and the soviet hammer/sickel better be smaller too: The padosh lake obscures the hammer, and the light blue Eastern CMD obscures the Finnish lion. Make both emblems smaller and you get a much better view of them.
3) Also it may be interesting (and fun to play) to do something about the importance of capturing Leningrad, Helsinki , Murmansk on this map.
Of that area I think those were the only worthwhile targets to capture.
Like: having two of these three cities yields a bonus of +4 (really important).
4) The icey lakes means infantry can go all directions, and should NOT be limited to ONE direction only.
Solution: make it a proper land with circle and borders. You know you CAN defend a piece of ice (setting charges ready to blow up the ice should the enemy advance).
Because you may want to give defense bonus to Finland you may choose one or two borders to be impenetrable from the russian side.(icon: a line of "dynamite charges" or barbed wire).
Cheers.
