She would have been great, but I don't think a second attempt will work out well.

I withhold judgment until I see someone else "forming a committee", or even talking about running. I've seen a few names mentioned, but I haven't heard from those actual persons. So you may as well be saying "Bill Gates would be a good choice". Has he said anything? Didn't think so...

Harris could be a good choice. She has experience, and -this time- would have time to rev-up an actual campaign. She'll never get MAGA, nor most republicans, but all she needs is the Dem base and the independents. If she can get Dems to show up, and swing the independents, she wins. The former may not be too difficult after 4 years of felonious rule. The latter will be based on how the little people have been affected by those four years. If she goes off on pronouns, she's doomed.