A difference without a distinction, as Chameleon Harris will be promoted to “President of the Senate”, the tie-breaker vote in any party-line division that comes along.
And without the filibuster, which Chuck Schumer is determined to eliminate, hers becomes the deciding vote every time. No overrides, no compromises.
Besides, whoever is selected as her preplacement will be at least as radical as she is, and possibly not even an American citizen, if Gavin the Gruesome Newsom has his way in the matter.
I do not think the Harris tie breaker vote will be needed that often. The fallout from January 6th almost guarantee 60 votes from misplaced Republican guilt.