--new tag: Promoted. The Promoted tag takes one parameter: the character's levels gained prior to getting promoted. The game takes this value and uses it to affect experience scaling going forward, both for its own experience gained from attacking enemies, and for the experience other characters get from attacking it.
For example: let's say that Charles Brisbane the Cavalier reaches level 20 and promotes, becoming a level 1 Mantis Knight. Without a Promoted tag, he'll suddenly start getting loads of experience for attacking and killing level 5 (or 10, or 15) characters, even though they're technically much less experienced than he is. So we need to add the tag Promoted,19 so that he's treated as the level 20 character he effectively is.
Another example: let's say that the player has to fight Igor Bloodbeard, a level 5 Marauder. The Marauder is the promoted version of the Bandit, so Igor is effectively level 24. If we don't give Igor the Promoted tag, and the player slays Igor using a level 10 character, that character will get very, very little experience for the task, since the game will treat him as slaying an enemy half his level!