Wouldn’t this allow like three states to dictate the other 47?

No, that's both not mathematically possible and big states aren't uniform. And all your other statements don't in any way address how the current system achieves any of those goals. There's no perfect voting system, but we know our voting system is very bad. Right now most voters are completely irrelevant to a presidential campaign. Not 49%, 80%. If you're not in a swing state, it doesn't matter to the campaign what your issues are.