Earlier quoted context omitted.
It was necessary at the time yes, it's just drastically outlived its usefulness.
Useful to who? It's working exactly as intended. You shouldn't get to unilaterally change the terms of a contract. If both parties agree, then sure. But if not, you have to accept the good with the bad, it's a compromise. We've gotten a lot more out of the deal than it has ever cost.
I think the founders would be pretty surprised to see the vast majority of electoral votes being determined all-or-nothing by the popular vote of the citizens of the state. If that was how they intended it to work, you might think they would've set it up that way in the first place.