This is not even remotely Constitutional. The College of Electors is the electoral process for a Presidential election. Each State has a general election— to select the electors pledged to their candidates, and the total votes are counted to decide those electors.
This was by design-— to prevent the possibility of FACTIONS,
a very real problem at different times in US History.
But that is by custom, and it is not required by the Constitution.
In fact, a State Legislature would be completely within its rights to appoint Electors by flipping a coin instead of allowing idiots to vote for them.
Looking a little deeper, the first purpose of the EC was to elevate only men of national stature, wisdom, experience and public virtue to the executive office. And as you imply, the winner would assume office without any political debts whatsoever to a factional party or divisive segment of society; his duty was to “serve, protect and defend the Constitution of the United States.”
Donald Trump - The Echo of our Framers' Uncorrupted President.