Yes. You don't need to abolish the whole college, just do this. And states can do it on their own and immediately, no need to sign a pledge only takes effect at some possible future time.

The problem with this, and with the pledge, is that it requires the states that benefit from the current system to voluntarily decrease their own influence. Which won't happen.

Alternatively, have each congressional district elect its own elector instead of a statewide pool. It gets even more interesting if the ballot only shows the potential electors’ names, without any party affiliation.