Season 2 is supposed to be a new map. I’m guessing it will start out at least as tough as say, province 20, and grow from there, if not pick up right where province 23 left off.
In most games, when you get to harder levels, you get better rewards for your efforts building a team that can farm these levels, in general, even with minor ups and downs, and some places being better than others.
In season 1, that is true, EXCEPT that after 8-7, recruits drop off significantly (per world energy consumed, not per level played), and after 12-9, they fall off the cliff.
Now I have to balance my farming between good experience, and good items in high provinces, against 3-flag provinces that will keep my training camps full.