New thought, you know having one big group of undead roaming around sure seems like it would be strange or make the setting easy. Unless of course there were far more creatures lurking behind ever corner. Though that could make combat more repetitious. I feel splitting groups up would be logical, though GMing for two or more different groups at the same time could become confusing. What about some people staying at the shrine in order to rest or something to that effect? Just some thoughts, though I could be completely inept at this subject.