Please note that we've updated the Mount & Blade II: Bannerlord save file system which requires you to take certain steps in order for your save files to be compatible with e1.7.1 and any later updates. You can find the instructions here.
Mount&Blade 1 had 2 real-life DLCs: Napoleonic Wars and Viking Conquest.
I suggest that when the time comes, a DLC similar to Viking Conquest should be made for Bannerlords but with the Eastern Europe of 1457 instead.
Why specifically 1457? Because then both Vlad the Impaler and Stephen the...