The group is working well as a three but I do see it needing a fourth permanent member sooner rather than later, the idea of a cult is it grows... it is with the fans but not within WWE.
I always thought AJ was perfect for them with the "twist" that A actually stands for Abigail... but I could see Paige going into the Linda Kasabian role for Bray in the coming weeks. That could be very interesting although it would be very dark for a guy they are threatening to turn face. Does Bray need a Harley Quinn type? or would that suit Ambrose better? He is the TittyMaster after all...
The Flock was just down to WCW only valuing factions at the time, so every one was in some kind of group, be it the Flock, NWO, Filthy Animals etc... The Family is different, infact, now the Shield has split, Evolution is not together in full and 3MB are gone they are the MAIN faction in WWE.
If you are going to add a male member of the group to be the 4th guy, there are some potential choices below:-
Kofi - Least likely and I get the "racism" point, but this could be WWE's way of disproving it by having Kofi used in this way. However, they know his value in the role he plays... he is today's Tito Santana and I don't really see him wanting to risk the extra he makes from merch etc at this stage. If he was gonna be pushed it would have happened... better to be employed and able to sell some shirts in the midcard/featured seriously at 2 PPV's a year than try something new and it kill that.
Bo Dallas - The natural move and one that still makes a lot of sense to me... they are real brothers but Bray and Bo seem to be two sides of the same coin... Bray preaches about the negativity and corruption while Bo preaches the positives... what if Bo-Leive was actually the same as Bray was espousing, just worded differently?
Curtis Axel - Let's face it the son of Curt has not really done much lately and is not benefitting at all from that connection... Rybaxel is on it's last legs with them seemingly about to split. He's the perfect guy, pun intended for Bray to recruit... everyone lets him down and abandons him... Bray offers him a "family" in the Wyatts... hell even bring Larry in to do the "please come home" thing...
Before Stardust, Cody was perfect too for similar reasons... Cody bearded, bedraggled and finding a "new family" and changing his name to Wyatt from Rhodes would have been interesting, and set a good edge to a feud with Dustin... but Stardust is awesome and far, far better... I don't even see he and Goldie feuding now, they'll just be a "super team" for the next year or two till Dustin retires and Cody can "take the mantle".
Kane - The obvious choice and still the major payoff... remember when they dragged him away? when they wanted to take the machine down from the inside? Well Kane has been on the inside now for a year... Steph thinks SHE unleashed the demon... but they could easily twist it and have Bray have been pulling his strings all along.
Heath Slater/Clem Layfied - This one is a little more "out there" but they have been using Heath as a jobber for some time now, but he does have an interesting wrinkle from the JBL and Cole show as "Clem", JBL's nephew... the Wyatts could manipulate him into the family and then JBL is the guy who is trying to get his "kin" back... not anywhere near as good as the other scenarios but Slater would perhaps fit the beard/bedraggled look and has a style/build different to the others to make it not just seem like a group of monsters.
I watched the movie Southern Comfort the other night, which is a massive influence on the Wyatt's and the key is that there are going to be Wyatts everywhere, hiding in plain sight... you only really saw the Cajun threat at the end of that movie, just when you thought it was all safe, they revealed themselves... so hopefully soon we start seeing some guys revealing themselves... not in an Aces and Eights way... but subtlety, after all the fans are well and truly drinking the Koolaid... it's crazy that no one on the roster is...