the moment Chavez goes full-on dictator and slays all of his political opponents,
He's already been putting opponents in jail, nationalizing huge chunks of the economy, arranging unlimited years in power, and rewriting the "constitution" as he pleases. What more can a full-on dictator do? As he begins to rule by fiat, I doubt there will be any change in what's already been going on.
And there is nothing he could do that would result in criticism from poor, stupid Beth or the other DUmp Chavezistas.