If there's one thing I would hope left-of-center people would have noticed in the last few years is the power of appointments, administrative decisions, rulemaking, and enforcement. Like, that was the
primary appeal of Warren to a lot of liberals like myself.
I don't know how the appointment process is going to go (we're still early in the transition) and between the GOP still in control of the Senate and likely a desire to "depoliticize" the cabinet, not having current congressional members would likely be easier to confirm. I would put money down that certain positions will be ran by certain power-brokers in the party (and, yes, Warren and Sanders are such power-brokers) to insure they are acceptable. National Security related positions (AG, State, Treasury, Defense) tend to be at the front of the line, particularly since 9/11, so it may be a while before we find out how this pans out.
So it'll end in Trump 2.0?
I'm going to go on record now as saying anyone who is trying to predict how 2024 plays out, whether the primaries or the general, is at best guessing and at worst projecting. We don't know what will happen in the interim and internal party politics remains an open question, as its unclear if Trump would run and unclear if someone else can consolidate his base in the same way he did even with his endorsement.