The Minimap: Simple replay?
At the end of later versions of Dynasty Warriors, after you completed a map, you could watch a tiny map of the battlefield, and there would only be a tiny portrait, much like those in League of Legends, running around the tiny map. A clock would count nearby, and players could control the time of the game to see what happened and when it happened, but only because they remembered what they did while their icon was at any venue.
It isn't much at all, you just watch a champion icon wiggle around and bobble around. But the value of watching that, especially if you could watch 10 players icons do this, was absolutely hilarious.
I know nothing about the technical feasibility, but it would be a fun addition to the game.