Something like this >
Shove it.. Pomorze, East Prussia and Silesia are not for take. Easter borders have nothing to do with it.
I see Krakow as suitable.
Krakow is too valuable as a historical capital for it to be anything that it is now.
Warsaw is situated on a good geopolitical axis and has an ample room to expand.
or like this >
what is the point of it? Mitteleuropa? Can you read maps Crow, I wonder sometimes..
By the way Poland idea of three seas is based on two assumptions:
a. to keep German influence limited in this part of the world/
b. to kick Russia out of EE and to keep them out.
Hence your idea of Russia or Germany participating actively in this project are most insane mussing you have produced to date and that includes your Sarmatian obsession.