I am having all sorts of gripes with the Britannia module.
1.) I could change a destroyed fort into a Romano-British soldier. That could easily be prevented.
2.) I could not clone a Norwegian army.
3.) The units are all supposed to be strictly limited in number but still a game piece palette is used.
These issues could all be fixed, though once you factor in the various pre-saved scenarios it would be a lot of work. Also “cloning” would need to mean “move a unit from the supply.” (And in this case the use of pre-saved scenarios seems legit.) Obviously I could do it myself but I need a break from messing about with modules. Still I would be interested to know if anyone else has any views.