What Valleyfair needs to do in the shortest amount of time and with the lowest cost in order to become a very good park:
Year 1: Replace Dinosaurs Alive at the front of the park with an inverting B&M and remake the front gate, Fury 325 and Gatekeeper style.
Year 2: RMC High Roller. Would be on the scale of Wicked Cyclone at Six Flags New England.
These 2 moves alone would mean that Valleyfair would then have an Intamin (Steel Venom), GCI (Renegade), B&M (front gate), RMC (New High Roller)
Years 3 & 4: Waterpark expansion. First, remove Excalibur roller coaster and replace it with a Waterpark parking lot. Then expand the waterpark into the unused space. This follows the plans submitted to Army Corps of Engineers. BTW, does anyone know what the status of this is in terms of being approved? Why is it taking so long:
Year 5: Replace Corkscrew with flat rides or an S&S free fly, etc.
That's it. Suddenly it's a great park, in only 5 years. And all it requires is some standard CapEx and approval by Army Corps of Engineers.