Also with SFA, it wasn't well taken care of for decades and there was so much competition around a three hour radius that all have superior rides. Possibly with WOF and SFSL being three and a half hours away they'll hedge their bets with one of the parks... but I'm not aware of the quality of SFST to say for sure. SF might also try to rid their contracts with Darien Lake and La Ronde, but there is a high population within a 4 hour drive to see them stay as well. I do not see Valleyfair going anywhere as it's close to nothing. Dorney has a lot of competition but it seems to do well as a family park for the area.
Now that CF is in charge, I could be SFOG get a lot more attention to the park as well as the Over Texas.
Whatever gets transfered from SFA to the other parks should also answer which parks are staying.