Why should I have brought them? This is your main mistake in this mafia game; you think that players should do something a priori, but that's not the case; they may have their own logic. In some cases, it's also just plain laziness, heh.
Obviously, the number of constructive messages, all other things being equal, should almost certainly decrease. The mafia has less information to share with the town, even when compared to the "strongest town role."
Yes, town players should a priori look for the mafia or at least try to make sure they are not mistaken for the mafia. Town players' laziness does not end well for the town.
Cop, please evaluate the number of constructive messages from Fragment, Shaman, and Master compared to their natural town level in your opinion.
And I understand that you are not going to write a detailed traffic light system. But this is your chance to convince me.
Added after 9 minutes
The second action is not displayed - this means Madness; for the others, NDs are displayed in one way or another. And from this, one can conclude that Vishmaster is not Madness.
Which, in principle, does not prevent him from being Death/Hunger.
Also, I am sure that no town player checked the player on the chain, because the living are more interesting. So, the check of Vishmaster, if it was Fragment, could only be a consequence of you being transferred.
However, it is not excluded that you simply don't have Vish as Cold or Madness, and therefore he is the most town-aligned, since only two mafia roles remain.