Is it? I know this is a theoretical possibility, but do electors even have the right to vote against what their state is having them do? Did any of the "founding fathers" talk about this as a benefit?
When it was created, the electors were not limited to state discretion.
Honestly, what really sold the idea of electors was the "past the post" number. The founders were reluctant to use any system other than 'Congress picks the president', but became convinced that so many people would be running for president, each state's electors would vote for "their state's guy" and the house of reps would get to choose anyway. Meanwhile we could claim to have a system where the people choose.
The founders were reluctant to use any system other than ‘Congress picks the president’
Exactly, and the compromise they eventually settled on was "state legislatures collectively pick the president."
The idea of Electors was simply a result of that, as a workaround for the fact that "one state legislator, one vote" wouldn't work because different states had them representing different numbers of constituents.
It was not initially intended for Electors to be chosen by popular vote.