It's a lot of fun to look around the map and see what people are doing, but Screeps is a slow paced game by nature. I'd like to be able to find the action and watch replays of it, The current display filters though, don't give many hints as to when and where to look.
So I'd really love to see the number of times screeps from different players entered the room. Then you could find battles and maybe even negotions, now with the speech upgrade. Of course, maybe negotiations should be hard to find,..