The Svir river is mostly covered by the borderline between USSR and Karelia.
There are two start times for scenarios in 1941. This screen shot shows ownership just prior to Barbarossa.
The second startline would be for Nov/Dec 1941, just before the attack on Pearl Harbor. I guess the frontlines as of October 31, 1941 would be the best date to choose.
My knowledge on this topic is somewhere between scant and none. So I will rely on you-all to reach a consensus of opinion. The criteria are:
1 - don't change from the WIF FE map unless there is an egregious error, or some other very compelling reason,
2 - physical/historical reality, and
3 - maintain the game play status quo with WIF FE (e.g., don't make changes that permit the Finns to make a devastating first attack that they won't be capable of doing in WIF FE).





