I think we have gone too far down the road to a direct democracy to turn back. The Republic is dead. Doing away with the electoral college only confirms that death. The people had their voice in the House of Representatives nationally and with all their state and local officials. The states were suppose to have their voice in the senate, pretty much done away with the 17th amendment and it is the states that cast their votes for the president contrary to popular belief.
I think this compact is a fad, even if more states join it won't last. I could go into it more, but would take too much typing.