Totally agree. California, taken alone, would be the fifth largest economy in the world. I do not think the founders of this country intended for a single state to have this much power over the rest of the nation. Splitting it into three states makes perfect sense. Of course, Texas and New York would need to be split in two to keep it consistent. Florida is getting close to needing to be split in two.
The Electoral College is great. Otherwise, candidates would be forced to campaign only in big cities, totally ignoring rural areas and sparsely populated states.
Yes, they would care less about the people who hold onto traditional values. But that's what the perfumed princes and the Boston brahmin want.
So who's going to violate a state's sovereignty and split the state in two? Only the state itself could decide that. But even that wouldn't work: it would encourage EVERY state to infinitely divide and increase their Senate representation.