[Targa]

Makes me think of Medieval: Total War. There's just not many ways to keep a player happy toward end-game in SP. It's similar to Dom2, and the way the programmers decided to "make it more interesting" toward the end of the game was to wait until you owned about 90% of the map, then all of a sudden nearly every province on the map would spring into revolt, and half a dozen of your enemies would reappear (an heir was in hiding or some such). While the logic behind it was to prevent you from becoming bored, knowing that winning is inevitable, it really became annoying to be thrust right back almost to a starting position by these events. I don't see how it would be possible to make end-game in SP a more fun experience. Probably a victory condition of owning 75% of the provinces or some such would be a good idea.