I don't have any problem with either. Every game that is design with respawning enemies, or no respawning enemies, is designed like that from the start, and so there isn't any problem with it beacouse everyting is built around it. Fable 1 would have been 40% less fun (out of 140% :)) if it didn't have respawning bandits on the roads betwen towns. Risen would never be as satisfying and as atmospheric if it didn't respawn only selected enemies in selected places between chapters.
