Doesn't it? Obama certainly gave the Dem Party a new face and invigorated the Party. The Dem. President, if there is one, becomes the leader of the Party.
I can see the argument for and against. The Senate & House leaders may not be in touch with certain subgroups of the Dem Party. They've been in a bubble, more or less, for many years. It's easy to lose the feel of the rank and file.
Companies regularly bring in new people - "fresh blood" they call it. Because a company benefits from the fresh perspective, the new people, the new enthusiasm that naturally wanes with the long-timers at the company.
I would think that political parties would be the same. OTOH, Pelosi is great at getting the Dems to vote together. She's very experienced at that....none better. I'm less familiar with Schumer on that score.
But it's not my decision. So...whatever. I do think the Dem Party needs to appeal to all Democrats, and not just the hardcore base, although they are critical to the party. But we have ignored some working class and middle class people, generally, IMO. We shouldn't leave the concerns of anyone out. We are all important. Even wealthy Dems. It is not a sin to be wealthy. That's what America was built on: the dream to raise your station in life (which is fast disappearing).