Been awhile since we've had a true closed setup. My first thought is treat D1 as a vanilla game.
Well I already have something to say:
I am a DayVig. I might be mandatory, I might not be. I'll probably say whether I am or not at a later juncture. But regardless, if/when I use this power I will fully be taking in town's consideration on who I might kill but I will not be bound to it because ultimately I trust my own reads more so than town as a collective whole as there is manipulation afoot here.
I am claiming 1. for this reason, to get input, but 2. I think it WIFOMs mafia enough to make them think about killing me--assuming I don't use my shot(s) today--(because I could be dangerous to them in taking out a mafia member during the day or I could be helpful to them in taking out a towie PR more beneficial to town than me)
But regardless of all of this I don't think we have ever seen a mafia dayvig before and I don't think we will ever see one. So while I won't say I am an IC I would hope that from your perspective you can increase your trust of me and my reads (but take them with a grain of salt because they are horribly bad).