It's an open question as to which will come first - commensurate coverage of the OC and the Valley, or the same for San Diego County. And let's just throw in lighting up the Alaskan Highway with SCs while we're at it.
Meanwhile, an Irvine SC would be nice. And since the Southwest Region's management seems to have an unnatural predilection toward putting SCs in busy, ICE-heavy locations, how about the top level of the "far" parking garage at the Irvine Spectrum? It's just off the 405 at least.
There's also room in the parking lot at Gladstone's, and the other end of that parking lot is a public library. Since nobody reads anymore, perhaps that end of the parking lot would be better. On second thought, that's Newport Beach, and not nearly as easy to get to as the Spectrum.