It's hard to fail at making a game slammed full of jumpscares and nothing else.
Maybe...if you're just looking for a good scare. I find jumpscares to be a cheap anti-horror affair if spammed incessantly.
BUUUT, I will agree to the pt that FnaF is actually a good horror game or well rather a breath of fresh air in the sea of mediocrity. It's probably one of the more prominent indie horror games that isn't an adventure game that really tried to stand out. Markiplier put it bluntly (not in exact words cos I forgot), the horror comes from the anticipation, not what to anticipate. And only few horror games who operate under randomness can truly pull that off without becoming cheap.
What I am merely proposing is the thought of having FnaF clones that will ruin this concept in the way Slender clones just ruined it for Slender. Off tangent though, Slender already ruined it to begin with my making the creepypasta/video series into a game format but I digress.
That said, I am just fucking pissing it at Chica 2.0 especially with that beakless mouth and the fact that it is now more undesriably female in appearance. Dat smile...