In the Finnich scenario you need to get Hämeenlinna on the map, it was the target of the Russian offensive as Sveaborg was protecting the coastal road route to Turku.
Maybe replace Vanda region that is anyways in a funny place, so you have the axis of Sveaborg, Hämeenlinna, Tampere somehow represented in the map.
Maybe there should be major road connecting these three as there was a good road and waterways connecting them, the line of communication was good.
Hämeenlinna should have a atleast a depot lvl 2-4 in it, the fortifications there where no more relevant at this time but it was an major administrative and logistical hub.
Hämeenlinna should have terrain of wooded hills, they had a good defensive position there prepared on the hills and intended to fight there, again high command overruled this.
Tampere is also wooded hills, actually a lot of the terrain that is marked as marsh should be wooded hills, looking at what roads the troops would be using.
The map is limited but actually enough for this scenario, the Swedish generals wanted to fight just in these places that are in the map but where not allowed!
This makes a very nice scenario where you have to conduct a slow fighting retreat using the troops in Finland to gain time for the relief to arrive from Sweden.
There is also the match up between the coastal fleets and the ocean going ones, also added the continuous threat of ambhibious landings along the Finnish coast to cut and control the LOC of the opponent.