Free mode?
 

I was wondering if it was feasible to change the players allegiance from Teutonic Order to any of the nations, although I suspect you could not do that with a simple mod?

It would be cool to be able to roam freely and fight for any nation you wished, hopefully a modder comes around with the same idea.

Free mode start after 8 or 9 mission of storyline campaign; if you want "cheat" and start from the start in sandbox mode press T during the campaign and write "freeplayon"; the primary quests will continue but they will become like secondary ones.

Thanks for the tip!