I watch WWE pretty regularly so feel free to ask me whatever questions you have about the Wyatt Sicks. Ultimately, they are a tribute and spin-off of a character named Bray Wyatt, who passed away in 2023 at a fairly young age. Great talent and was always super popular with the fans, but never was utilized quite in the right way in terms of overall story.
Bray Wyatt had a stable known as the Wyatt Family, which consisted of 3-5 people at any given time, mostly men, but sometimes women. Less of a family and more of a cult with ghosts and...stuff. Their fans would turn on their phone lights during their entrance while he carried a lantern and it looked like "fireflies," which basically made the name of his fans, "Fireflies." Long and short of it, they were into some pretty spooky stuff -- possession, demons, cult behavior, children show antics for some reason, etc.. There's a WrestleMania where he fights John Cena in a "Firefly Fun House" match that is definitely not a conventional match and more of a cinematic experience, and it would sound insane if I described it so must be seen to be believed. At some point, he turned into "The Demon" persona and became even more powerful, both supernaturally and physically, going onto becoming champion during this era.
His younger brother was going to join the Wyatt Family at some point, I believe, but they never quite got around to it, so to revitalize the stable and pay tribute to his brother, he formed The Wyatt Sicks which is basically a new demented Wyatt Family, and he is their new leader known as "Uncle Howdy" -- sound familiar? They debuted just this last year, but honestly haven't been around much. However, they are kinda pushed hard as a dominant force, despite losing not too long ago.
Forgot to post my feelings about it possibly coming haha:
Eh, I'd prefer straight horror movies or TV shows still. It's more horror than forcing it like The Weeknd. but it's not that exciting especially because they're more new of a stable and it definitely wouldn't be all that popular. WWE is a fairly niche thing already and then within that subset of the niche, it'd be for fans of this specific stable -- as this wouldn't generally appeal to all WWE fans. WWE fans as it is, was most popular during the Attitude Era (1997-2001), so anyone who watched 20+ years ago being told that this is a new WWE thing, I imagine would be more confused than anything. If they were to go WWE, I'd prefer the backstory of Undertaker and Kane who were popular during the Attitude Era, which they've obviously already done before and that supposedly didn't work, so I see no reason why this would be any better when that is the PERFECT story for an HHN maze.