Thank your for your kind thoughts!
We do understand this module can be a challenge to run, especially for new wardens, with all the points you have mentioned. We believe that any warden can create a fun game with the paranormal nature of the game, but recognize there can be better pay off with experienced wardens.
In regards to the disconnect of pretending to not understand PCs separated by the world, we had tried to see how players can still communicate with each other without it feeling like they are just "in another room". We had ideas like, PCs can experience communication, but all audio comes off as reversed. However it was proving to be difficult to detail on the limited real estate. We certainly need to dwell into better practices to implement when splitting a party.
Given this has been a repeating point of feedback, we'd love to create a FAQ resource of sorts for Wardens to reference for more guidance. Perhaps we can go into a bit more detail about being separated in the FAQ section and encourage wardens to threat it as splitting the party with no communication. But, please leave any further questions you may have!