I honestly don't think its going to do that well, I mean the sound of it alone already has me pretty unintersted and I love 7dtd. That and TFP doesn't have the best rep with players anymore due to many poor decisions on the direction of the base 7dtd game. I know I for one will be very hesitant to touch another game TFP makes again due to what i've seen here in this one.
A couple of things to consider: there's a market for asym games that has nothing to do with 7 Days fans. They always flock to whatever new asym there is. But history has shown that only 1 and a half asym games have succeeded. Dead by Daylight, and the half is Friday the 13th, which never had a chance to reach it's full potential. But considering how it maintained a playable player base for 6 years, I would deem it a success.
Blood Moons has the potential to capture the disillusioned Dead By Daylight players that have been Stockholm'd into constantly playing it. They're always looking for an out. I am almost sure that Blood Moons will have a strong 1st two months. After that, it all depends on how addicting the game loop is.
And I find it hard to consider that TFP have made poor decisions, seeing that the game has more people playing it on a consistent basis more now than ever.
It reminds me of back in the day when an indie band would have a strong dedicated following. But then they would sign a deal with a major label and start making hits, and all of a sudden the original dedicated following would hate the band and shout from the rooftops about how much they suck now...as the band goes on to sell out stadiums.
A21 is the best version of this game. I first played 7 Days on A19. I played it for 2 hours and then didn't play it again for 3 years. Now I'm obsessed with it. I downloaded A16 and played that for a few days. At best, it had it's own type of charm.
So as the Drill Sgt in Stripes once said: "Lighten up Francis".