This is whole revamp of leagues, finances, facilities, reputation, well just take a look at the pictures below.
Sarmatian Premier League:
Financial awards after season ends:
Here you can download kits and flags for the national team.
Kits & Flags
How to install Sarmatia new nation in FM20Put the "Sarmatia Nation for FM20.fmf" file in: "Sports Interactive\Football Manager 2020\editor data"
Then when you're starting a new game make sure that this file is "ticked". It works perfectly with Football Manager 20.4 update.
*important note - also tick "add players to teams" which will allow the game engine to make sure that smallest teams squads have enough players.