Not to speak for blkprince, his thoughts may differ.

Klobuchar's mainstream (some would say 'moderate', though that's become a dirty word), which will be valuable in the general election. Younger and better in debates than Biden. Older and far more experienced than Buttigieg. She'd still draw that excitement of being the first female president, but nobody would be able to peg her as a radical. Whether people want to believe it or not, the 'radical' epithet did become a problem for Hillary, whereas Obama, while they threw the same shit at him, it didn't stick, mainly due to his personal charisma. Klobuchar obviously doesn't share Obama's charisma, but her folksy presence, that we groan at in every debate, serves the same purpose on this count.

I've always taken Klobuchar seriously. If I thought she had a chance in the primary she'd be my candidate. But I fear her upswing (such as it is) has come too late.