After visiting the park for the first time last year, my observations.....
Great selection of flat rides. Personally I think SFDL has the largest collection of flats I have seen in a park in a long time (outside CP). It wouldn't hurt to add a few more.
Don't take my word for it but I can can see a new freefall in the near future as well as a B&M of some sort. Forget the floorless as SFWOA already has that. SFDL should get a Kumba or Wildfire style looper from them.
I agree with the black top comment. Nothing like walking on a hot asphalt midway to make one miserable. Add some cobblestone and gardens/trees. Actually, as far as themes, majority of the architecture used in the park takes on a "country" look so I think the park is one big theme instead of individual themes. I like it as it is.
Make the Twister area by Darien Square fit more with the park instead of out by itself. Not an easy area to negotiate if you are not familiar with the park.
Scott0610 mentioned that their coasters, except Superman, were boring. Sure Boomerang and Mind Eraser are pretty much cookie cutters, but I thought Predator was a great coaster after two front seat rides and that Viper was a gem of an Arrow looper.
For some reason the park is calling me back there this summer.
X Factor
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SFWOA: An Unofficial Guide
http://sfohio.tripod.com