There's plenty horror ripe to parody, I feel. No doubt they'll take aim at some of Jordan Peele's work, but someone on Twitter suggested that this could take aim at the X/Pearl trilogy.
Either way, my hope is that this is more focused than Scary Movie 3 and onward. Scary Movie 1 and 2 took aim at a lot of things, but the first one is mostly a parody of Scream, while 2 is mostly a parody of The Haunting, with bits and pieces of other horror films and references sprinkled throughout. Where Scary Movie 3 and onward lost the plot (even though I like parts of both) is that the main focus wasn't spoofing horror, but everything under the sun.