Alot of reviewers have brought up how barren Cyrodiil is as you make your way across the map to whatever destination you might be headed. They have suggested small roving bands of alliance based NPCs that wander the land, but I would like to take that a little farther. My thoughts are of massive alliance based troop formations lead by a strong NPC General that move slowly towards any keep that their alliance holds and is under siege. If this formation reaches the keep before being destroyed, bonuses in NPCs and keep strength is improved by how big a formation makes it.