For the entirety of this century, Democrats have been naive institutionalists while Republicans have been destructionists. Institutions cannot save you if they do not exist. Conservatives are trying to kill us while liberals are still bitching about following the norms.
Fun story, did you know President Biden can have supreme court justices and elected officials arrested for aiding in an insurrection because hey, its part of his duties as President to defend the constitution. Take that immunity and run Joe.
The majority opinion calling the non-judicial branches "political" makes me think some of the Justices have utterly dissociated from reality, or that they spend their spare time petting white cats and cosplaying Bond villains.
The problem (meaning one of many, many problems) with Democrats is they mass deliberate on every issue. They might put this up for discussion for a month before they kill it because of some technocratic snag the top dogs of the party get hooked on. If I recall correctly, they've already done this.
Which means we're actually already a few steps down the road in this process.
This isn't that hard. At the moment the Democratic Party has a single leader. If he endorses court expansion that's the Democratic position, at least for a while.
If you mean Biden. he's not going to. He doesn't have the stomach or nerves for it. He is neither a radical nor a visionary. He's a conservative "bipartisan" technocrat by deep nature. (If he does this, it's because someone else has taken the reins from him.)
Manchin wants to feel important, so if they gave him a few higher profile jobs, praised him for the performance thereof, and otherwise massaged his ego; I think he'd (1) agree to run for another term, and (2) go along with a few bigger picture things.
West Virginia is actually ideal for "hemp as biofuel" production; allocate some money, put Manchin "in charge", and he's the "hero" who brought a few thousand jobs for the cultivation, refining, and transportation that produces a few 100k bbls of diesel and biogas fueling the SE.
Manchin isn't an idiot, he just wants to feel important and on top of something. In a split Senate, he sees himself as "kingmaker". So give him something else to do.
**Sorry for the delay in this follow up, I'm at work and it moves in waves