I really like the Caldron system. It was fun seeing the Taunt system. Hopefully my teammates don't taunt who we're killing each night as Mafia. I think the silent dousing and doused players appearing as BG/GF/Arso will definitely help increase the Arso's win rate. I also like what you're doing about coin farming.
The only thing I don't like is the Spy/Mafia change. To allow Mafia to discuss strategy, I think the Spy should no longer be allowed to see the Mafia Chat. I do not like the fact that you're confirming the existence of a Spy to the Mafia. However, I am curious to see if there really is a significant difference in discussion in the Mafia Chat knowing that there isn't a Spy. In a 40 second night, I wonder if there will be much of a difference. First thing that comes to mind is easier communication with RMs, especially if the Any is Mafia (in Ranked). Because I would say something like "RM visit 5", but when the Any was Mafia, there would be confusion about which RM I was referring to.
Tl;Dr I like all the changes except for the Spy/Mafia change.