It's not too early to wonder. And Noam Scheiber at The New Republic seems to think she might:

In addition to being strongly identified with the party’s populist wing, any candidate who challenged Clinton would need several key assets. The candidate would almost certainly have to be a woman, given Democrats’ desire to make history again. She would have to amass huge piles of money with relatively little effort. Above all, she would have to awaken in Democratic voters an almost evangelical passion. As it happens, there is precisely such a person. Her name is Elizabeth Warren.

Let's see what the voters of Slog have to say about this.