Hi there !
I just played a game, and had an idea. In this game, I was GF and my blackmailler always blackmailled the same guy, who was in fact crier.
The suggestion here is : what if the blackmailling also worked at night ? It would make the crier incapable to shout during the night, and may look like a disguiser took his place.
For instance, blackmailling the crier Night #3 will prevent him to talk Day #4 and Night #4
According to me, the blackmailler isn't so usefull. Have the abilty to prevent the crier to talk at night may help, mainly when the crier is helpfull to the town because he says interesting things at night.
We can push the thing, and prevent the jailor to speak, and every role that are able to speak at night, but it was for the crier from the begening.
Sorry for my english that may not be perfect, hope you'll like the suggestion. I can upload the replay of the game if you want to watch it
Looking forward for your questions or messages
Regards