Yes, Paramount did expand the coaster count. The issue for me was that many of these PKD coasters were prototypes with one or more of the following issues: low capacity, poor reliability, and a short ride circuit.
Paramount's Hypersonic XLC and Volcano are now in the wastebasket. Only 2 of the four Paramount era coasters are still here (FOF and Stunt Coaster). Course, Shockwave was a KECO era coaster removed 4-5 years ago; King Kobra and the Galaxy coaster were removed in the mid-late 1980's by KECO to be replaced by the Anaconda (1991) and Shockwave (1986).