Although Cedar Fair raised a lot of height requirements at the former Paramount Parks, they also lowered/altered some to let shorter people ride. CGA for example:
Delirium used to be 54", then became 48".
Centrifuge used to have a minimum of 40", but now anyone under 46" can ride with a responsible person.
Logger's Run lowered it's minimum from 40", to 36" with a responsible person.
Not a lot, but those are some very popular rides at the park. My biggest pet peeve though, was raising Orbit to 54" (Schwarzkopf Enterprise).