Is the Elder God Health affected by the number of board expansions in play?
I'm of the same mindset. The final battle's difficulty shouldn't change based on how many boards there were to run around on; the battle isn't any harder because there was more space to run around on, things to get done, etc. There's just as many opportunities to gain weapons and spells, why should the fight be any harder? There was a thread on this topic on the Fantasy Flight messages boards some time ago, but I can't seem to find it.

Edit: Here we go! From the Kevin Wilson answers thread on the forum.


  [KH] 10. While using Kingsport and Dunwich together you count the # of Investigators as one less for monster limit, outskirts, etc. due to there being so much ground to cover. I take it this does not apply to the number of successes needed to remove a doom token in the final battle? (06/13/08) 
  Correct. Otherwise the final fight would be a lot easier than intended. 
  
  -Kevin Wilson 
  Fantasy Flight Games