Some of us were disappointed that Elizabeth Warren decided not to run for President. In retrospect, it's very clear that she is the most effective exactly where she is now.
The general consensus is that Trump's candidacy will help to return control of the Senate to the Democratic Party. If that happens, I can't think of anyone I would like to see more as majority leader than Elizabeth Warren. Since the Republicans under Mitch McConnell have accomplished little or nothing to help the American people, Elizabeth Warren would be a very welcome change.