I agree with your point about Hillary, but I feel as though Bernie would do better this time around. The only other person I think would be a real threat to him in the primaries would be Joe Biden. It will definitely be interesting to watch.
I supported Bernie in 2016 and ultimately voted for Hillary. As much as I liked Bernie's ideas in 2016, I'm not convinced that I would support him this time around because of his age and my views are a bit different now. It would be tempting to vote for him if he won the nomination so I have a lot of thinking to do once everybody that wants to run has announced their candidacy. I'm not even sure I'm going to vote for a Democrat because I'm kind of closer to the middle now. I'm all over the place with this so I hope I can come to a conclusion at some point lol.