I imagine it will be similar. Hopefully more rpg elements, more text-quest adventures. That is what really made this strategy game unique. Really looking forward to this.
More choices, more text quests, more leveling.
Combat needs to be further improved though.
Less focus on economics and mass producing armies and more on gathering and keeping veteran forces.
It would also be cool if one could make oneself in game. A customized 'hero' knight that is the driving force in the campaign to restore the King.