I think having a "Scenery Ending Report", at the conclusion of a campaign game, reporting major battles results, (battle winner, number of committed troops per side, losses), and other major events, (major town changing side date), could add depth to game.
Possibly a printable "Scenery Ending Report", could be saved by players or even posted at forums.
Anyway, players will have chance to save a "copy of campaign history" they wrote with own choices and actions during campaign game!
JastaV