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.
It would also be great to see some kind of field artillery in the game. Something related to scorpios, maaaybe even a small catapult. Yes, it would be highly impractical in most cases for field battles without gunpowder, but fun and interesting battles is good. Together with engineers, we could have a dynamic battefield
*Edit* Could also be more relevant for a hybrid siege-battle situation.
This would be cool and a good use of the class system. At the very least, Siege maps should have stakes pre-deployed that damage cavalry riding into them, they should be able to be destroyed but it'd be a nice way to help resist the storm of cav.