He can set the tone, but the house and senate will be the ones drafting bills for him to sign. You believe if they send him small wins, he'd veto them out of idealism?
The problem would start from the beginning.
Let's keep 2009 as our recent history.
Lots of time and political capital burnt on HC.
What's Bernie's top priorities? He "wrote the damn m4a bill", so there is no realistic way it's not that legislation that gets worked on, and likely first as that's his signature issue.
Nancy is proud of Obamacare, she passed it, maybe she'll try and steer Bernie back to it, but really? That's likely to happen?
That's the Biden path anyway, so why do I need Bernie?
Ds will be lucky to get a majority in the Senate.
60 is not going to happen.
So say we stay on the Bernie path, how many months of committee hearings, protests and death panel bullshit are we going to go through?
It's 20% of the economy, millions of jobs impacted, no way they are doing a TCJA rush job in the middle of the night on this.
And we're getting 60 votes how?
So after all that wasted time, we do what, when does Bernie call an audible and go back to the Biden Ocare plan?
Then there's the inevitable midterm bloodbath. Can Ds keep the house? Or is it 2010 all over again.
Then you can kiss the green new deal stuff goodbye when the Rs take back the house, and well be lucky if anything gets done before that.