To be honest I think it'll be a draw by default since we've gone over a year with any big haunt stuff in socal, so people will be hungry for whatever there is, but it probably wont be as big advertising wise as you'd usually see. In HHN's defense, Knotts reuses like 85% of their lineup yearly, so if they take this opportunity to enhance whatever they have to work with, (as much as I doubt thatll happen), it could work out fine. I'll probably be at least a little nervous about the execution till i see it with my own eyes, but I feel like it still has a chance.
Also, if its true that we're only getting 4 mazes this year, i think its a safe assumption that we wont be seeing Frequent Fear this year, or at least not on the same scale. At best we might get those Thursday and Sunday only passes or 2-3 night passes. The event will probably be crowded enough without passholders in the mix.
EDIT: To avoid double posting im just gonna make this an edit, but we mightve jumped the gun on the whole 4 mazes thing.