You can't do that with national effect by concerted state action with less than 100% of the states (you can simulate it by casting all votes for the candidate that would win by that rule with a bare makority, but that's just a chunky version of national popular vote.)
> I've seen more news about states leaning towards the 2nd option which is actually much worse than the electoral college in its current state.
It's worse if you care about the per-state vote and not the national outcome; it's better if you care about the outcome, since it produces the desired outcome of adopted by states with a majority of electoral votes (and the NPV only goes into effect in states adopting it when it has been adopted by states with a majority of electoral votes), while proportional allocation for electors needs universal adoption to implement it's effect.