That map looks REALLY good. I'll have to try and make it to Gen Con next summer so I can see it up close.
BTW - what are your criteria for becoming a playtester? Myself and two friends (and maybe as many as three more) are now pretty much playing the game at least one night a week (every Wed. night and sometimes Tues or Thurs as well). With us meeting so regularly, we might be able to get in enough play to properly test out new concepts, whether for the current game or this new monster.