In its current form, the electoral college does not perform its original role of preventing mob rule. Electors vote in accordance with the popular vote of their state (this is only required by some states; but still almost never happens, as the parties pick their electors).

What ends up happening is that the electoral college just turns into a weird way of counting the popular votes, where some votes count more then others (specifically, voters in less populace states have a bigger vote; and voters in more divided states are more likely to have a meaningful vote).

Many (including myself) would argue that Donald Trump is precisly the failure mode that the electoral collage was designed to prevent.