I have to be honest, it sounds like you guys have kind of answered your own questions. Being in So Cal your only options are: Disney, Universal, Knotts, SeaWorld, Legoland. So I would at least give each one of those parks a courtesy visit to see if it's worth going back to. Really, though, sounds like you guys are just Disney fans.
This morning we decided to go back to Knotts in addition to Sea World. I've heard that Knotts Berry Farm has gone through a big renovation since we were there last (about 12 years ago) adding more rides, cleaning up the place, etc. So we're going to give that a shot. Should be fun.