I had though of a rather different division, involving the state of Nevada.
The southern part of Nevada, including Clark County and most particularly Las Vegas, would be ceded to California, and the point where the state line turns north, in the middle of Lake Tahoe, simply draw the line straight west to the Pacific Ocean. Nevada gets access to the sea, and both Sacramento and San Francisco stay in the “New California”, which now has the revenue from Las Vegas to help with the state’s budget problem.
Las Vegas has sucked the remainder of Nevada dry (literally) with its diversion of water rights, from areas that could not deliver water to the Las Vegas region by any simple gravity or even major engineering means. Las Vegas should be dealing with Los Angeles for the water rights, not Elko or Fallon.
That would be okay as long as those of us in Orange County can become non-Californians. Maybe take the orange portion of the map and annex it into Arizona? It looks like it covers Orange, Riverside, San Diego and San Bernardino counties. Overall a decent mix without all the L.A. garbage. Then AZ would have Newport Beach for yachting and Big Bear for skiing and Temecula for wine and Camp Pendleton for our brave military peeps.